Finding the Fourth Proportional to 102,663.38, 141,665.46 and 57,337.76

Step by Step Solution

1. Step 1: Write the proportion equation
   102,663.38 : 141,665.46 = 57,337.76 : x
2. Step 2: Convert to fraction form
   102,663.38/141,665.46 = 57,337.76/x
3. Step 3: Cross multiply
   102,663.38x = 141,665.46 × 57,337.76
4. Step 4: Simplify right side
   102,663.38x = 8,122,780,145.77
5. Step 5: Solve for x
   x = 8,122,780,145.77/102,663.38
6. Step 6: Final answer
   x = 79,120.52