Finding the Fourth Proportional to 124,520.28, 171,785.98 and 81,510.29

Step by Step Solution

1. Step 1: Write the proportion equation
   124,520.28 : 171,785.98 = 81,510.29 : x
2. Step 2: Convert to fraction form
   124,520.28/171,785.98 = 81,510.29/x
3. Step 3: Cross multiply
   124,520.28x = 171,785.98 × 81,510.29
4. Step 4: Simplify right side
   124,520.28x = 14,002,325,047.73
5. Step 5: Solve for x
   x = 14,002,325,047.73/124,520.28
6. Step 6: Final answer
   x = 112,450.16