If you invest $100,000 today at 12% per year over the next 15 years, what is the most you can spend in equal amounts out of the fund each year over that time.

I think it is the case similar to the loan amortization schedule completely because the payment has always been equal to invested amount.

Like if i am going to invest $100,000 at 12% rate for 15 years today then the annual payment must be similar to the full loan amortization and the total amount must also be $14,682.42 which will be received in total after investment time has been completed.