Please use FORMULA and how to work it through financial calculator if possible. thanks

An investor has an opportunity to purchase an investment that will provide $11,000 at the end of three years, and $50,000 at the end of five years. If the property is expected to be sold at the end of the sixth year for $100,000 and the investor requires a 12% rate of return, what amount should he or she pay for the investment today? $161,000 $50, 663 $81, 568 $86, 864