Finding the Fourth Proportional to 88,411.69, 132,645.20 and 56,857.38

Step by Step Solution

1. Step 1: Write the proportion equation
   88,411.69 : 132,645.20 = 56,857.38 : x
2. Step 2: Convert to fraction form
   88,411.69/132,645.20 = 56,857.38/x
3. Step 3: Cross multiply
   88,411.69x = 132,645.20 × 56,857.38
4. Step 4: Simplify right side
   88,411.69x = 7,541,858,541.58
5. Step 5: Solve for x
   x = 7,541,858,541.58/88,411.69
6. Step 6: Final answer
   x = 85,303.86