Finding the Fourth Proportional to 102,271.12, 141,134.30 and 56,957.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,271.12 : 141,134.30 = 56,957.83 : x
2. Step 2: Convert to fraction form
   102,271.12/141,134.30 = 56,957.83/x
3. Step 3: Cross multiply
   102,271.12x = 141,134.30 × 56,957.83
4. Step 4: Simplify right side
   102,271.12x = 8,038,703,042.54
5. Step 5: Solve for x
   x = 8,038,703,042.54/102,271.12
6. Step 6: Final answer
   x = 78,601.89