Finding the Fourth Proportional to 101,541.12, 152,046.72 and 81,711.36

Step by Step Solution

1. Step 1: Write the proportion equation
   101,541.12 : 152,046.72 = 81,711.36 : x
2. Step 2: Convert to fraction form
   101,541.12/152,046.72 = 81,711.36/x
3. Step 3: Cross multiply
   101,541.12x = 152,046.72 × 81,711.36
4. Step 4: Simplify right side
   101,541.12x = 12,423,944,274.74
5. Step 5: Solve for x
   x = 12,423,944,274.74/101,541.12
6. Step 6: Final answer
   x = 122,353.82