Finding the Fourth Proportional to 52,665.09, 72,663.17 and 31,436.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,665.09 : 72,663.17 = 31,436.61 : x
2. Step 2: Convert to fraction form
   52,665.09/72,663.17 = 31,436.61/x
3. Step 3: Cross multiply
   52,665.09x = 72,663.17 × 31,436.61
4. Step 4: Simplify right side
   52,665.09x = 2,284,283,736.65
5. Step 5: Solve for x
   x = 2,284,283,736.65/52,665.09
6. Step 6: Final answer
   x = 43,373.77