ABC Fund has committed to invest 10 Million. Just for simplicity we can assume that there are no management fees and carry. On first day of the fund ABC calls for 1 million, and at the end of first year ABC gets back 3 million. Staring of next year, it calls 4 million more. At the end of second year fund gets back 4 million more. Now at the beginning of third year ABC calls for rest of the committed fund. At the end of third year fund exits this third investment and gets 7 million back. Based on this information develop Internal Rate of Return equation for these three years of ABC Fund