Internal rate of return method The internal rate of return method is used by Testerman Construction Co. in analyzing a capital expenditure proposal that involves an investment of $127,900 and annual net cash flows of $32,000 for each of the six years of its useful life This information has been collected in the Microsoft Excel Online file. Open the spreadsheet, perform the required analysis, and input your answers in the question below. Open spreadsheet Determine the internal rate of return for the proposal. 1 Internal rate of return method 3 The internal rate of return method is used by Testerman Construction Co. in analyzing a capital expenditure proposal. The following data is provided: DATA 5 6 Period 8 Cash flow -$127.900 $32,000 $32,000 $32,000 $32,000 $32,000 $32,000 Using formulas and cell references, perform the required analysis, and input your answer into the Amount column. Transfer the numeric result for the green er er the numeric result for the green entry cell (B18) into the 15 appropriate fields in CNOWV2 for grading. Amount Formula Intemal rate of return