What lump sum deposited today at 8% compounded quarterly for 15 years will yield the same final amount as deposits of $3000 at the end of each 6-month period for 15 years at 4% compounded semiannually?

What lump sum deposited today at 8% compounded quarterly for 15 years will yield the same final amount as deposits of $3000 at the end of each 6-month period for 15 years at 4% compounded semiannually? The value of the lump sum is S. (Round to the nearest cent as needed.)