How do I solve this? I would appreciate a clear explanation

I tried answers 33,028 and 79,988 and they were wrong.

X Your answer is incorrect. Click here to view factor tables $51,970 payable at the end of the seventh, eighth, ninth, and tenth periods at 12%. (Round factor values to 5 decimal places, e.g. 1.25124 and final answer to O decimal places, e.g. 458,581.) Present value 79,988