Finding the Fourth Proportional to 102,272.16, 141,131.76 and 56,951.76

Step by Step Solution

1. Step 1: Write the proportion equation
   102,272.16 : 141,131.76 = 56,951.76 : x
2. Step 2: Convert to fraction form
   102,272.16/141,131.76 = 56,951.76/x
3. Step 3: Cross multiply
   102,272.16x = 141,131.76 × 56,951.76
4. Step 4: Simplify right side
   102,272.16x = 8,037,702,123.90
5. Step 5: Solve for x
   x = 8,037,702,123.90/102,272.16
6. Step 6: Final answer
   x = 78,591.30