grey fox aviation company is analyzing a project that requires an initial investment of $550,000. the project’s expected cash flows are: year cash flow year 1 $375,000 year 2 –175,000 year 3 400,000 year 4 500,000 grey fox aviation company’s wacc is 7%, and the project has the same risk as the firm’s average project. calculate this project’s modified internal rate of return (mirr):