Finding the Fourth Proportional to 113,103.27, 156,119.13 and 81,364.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,103.27 : 156,119.13 = 81,364.50 : x
2. Step 2: Convert to fraction form
   113,103.27/156,119.13 = 81,364.50/x
3. Step 3: Cross multiply
   113,103.27x = 156,119.13 × 81,364.50
4. Step 4: Simplify right side
   113,103.27x = 12,702,554,952.89
5. Step 5: Solve for x
   x = 12,702,554,952.89/113,103.27
6. Step 6: Final answer
   x = 112,309.35