Finding the Fourth Proportional to 288,105.69, 397,623.47 and 160,807.71

Step by Step Solution

1. Step 1: Write the proportion equation
   288,105.69 : 397,623.47 = 160,807.71 : x
2. Step 2: Convert to fraction form
   288,105.69/397,623.47 = 160,807.71/x
3. Step 3: Cross multiply
   288,105.69x = 397,623.47 × 160,807.71
4. Step 4: Simplify right side
   288,105.69x = 63,940,916,860.80
5. Step 5: Solve for x
   x = 63,940,916,860.80/288,105.69
6. Step 6: Final answer
   x = 221,935.63