Sam has decided to go into business at the age 40. He wishes to accumulate P200,000.00 at that age. On his twenty-fifth birthday he deposits a certain amount and will increase the deposit by 10% each...

Sam  has decided to go into business at the age 40. He wishes to
accumulate P200,000.00 at that age. On his twenty-fifth birthday he deposits a certain amount and will increase the deposit by 10% each year until the fortieth year. If the funds can be invested at 9.6% compounded annually, how much should his initial investment be?

WARNING - ANSWER SHOULD BE ACCURATE AND NO EXCEL. OTHERWISE I WILL DOWNVOTE