Finding the Fourth Proportional to 102,472.26, 141,411.42 and 57,150.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,472.26 : 141,411.42 = 57,150.30 : x
2. Step 2: Convert to fraction form
   102,472.26/141,411.42 = 57,150.30/x
3. Step 3: Cross multiply
   102,472.26x = 141,411.42 × 57,150.30
4. Step 4: Simplify right side
   102,472.26x = 8,081,705,076.43
5. Step 5: Solve for x
   x = 8,081,705,076.43/102,472.26
6. Step 6: Final answer
   x = 78,867.25