please show excel spreadsheet and formulas

USE EXCEL TO COMPLETE THIS PROBLEM (MAKE SURE TO USE EXCEL AND SUBMIT YOUR EXCEL SPREADSHEET TO THE DROPBOX TITLED "FINAL EXAM EXCEL". IF YOU DON'T SUBMIT YOUR EXCEL DOCUMENT WITH FORMULAS, THEN I CANNOT GIVE PARTIAL CREDIT!! Calculate the Discounted payback period, net present value and profitability index of the following set of cash flows (assume a cost of capital of 12%): Initial cash outflow (period 0) ($175,000) Period 1 cash flow |($30,000) Period 2 cash flow $80,000 Period 3 cash flow $110,000 Period 4 cash flow $150,000 Period 5 cash flow $90,000 Period 6 cash flow $50,000 Is this a profitable investment