Possibly. It would be up to the judge, if you object. Normally, the account is sufficient and supporting documents are not required. The judge can always ask for more. It sounds like he has provided you with more information than he was required to, already, however. You do not need to be satisfied, if the judge is satisfied. Your best bet is to retain a lawyer to review the information that was provided and determine whether or not there is reason to investigate further. This will also show the judge that you are serious and not simply trying to give your sibling a tough time.
***Please be sure to mark if you find the answer "helpful" or a "best" answer. Thank you! I hope this helps. ***************************************** LEGAL DISCLAIMER I am licensed to practice law in the State of Michigan and have offices in Wayne and Ingham Counties. My practice is focused in the areas of estate planning and probate administration. I am ethically required to state that the above answer does not create an attorney/client relationship. These responses should be considered general legal education and are intended to provide general information about the question asked. Frequently, the question does not include important facts that, if known, could significantly change the answer. Information provided on this site should not be used as a substitute for competent legal advice from a licensed attorney that practices in your state. The law changes frequently and varies from state to state. If I refer to your state's laws, you should not rely on what I say; I just did a quick Internet search and found something that looked relevant that I hoped you would find helpful. You should verify and confirm any information provided with an attorney licensed in your state. I hope you our answer helpful!
You need to have an independent FL attorney review the documents and facts of your case. Frequently once the account is filed you have a set time to file objections, commence discovery to obtain documents, etc....and you may have already missed any deadlines to object to the accounting or to obtain an order to compel your brother to release documents. Generally until the court issues an order your brother has no obligation to voluntarily produce supporting documentation for the accounting
You need to hire a probate attorney to review the documentation you received and go over everything with you. Time is likely of the essence. If you received the accounting by formal notice you only have a short window of time to object or you are forever barred. Set up an appointment with an attorney NOW.