You invest $1,000,000 today in an account with an annual return of 5%
effective for the first 10 years and 8% annual nominal, capitalized quarterly for
the following 15 years. You plan to withdraw a monthly amount (X) during the first 5
years, double (2X) (monthly) the next 10 years and triple (3X) (monthly) the next 10
last years. Calculate X. (Zero balance at the end, i.e. there will be nothing left in the account
in 25 years)