Given, Future value (FV) = 215,000
Interest rate = r = 10.8% = 0.108
Number of years = n =9
Present value = FV/(1+r)^n
Present value = 215000/(1+0.108)^9
Present value = 215000/1.108^9
Present value = 85,424.14
The amount that you must invest today = $85,424.14