Finding the Fourth Proportional to 113,487.64, 156,541.98 and 81,606.04

Step by Step Solution

1. Step 1: Write the proportion equation
   113,487.64 : 156,541.98 = 81,606.04 : x
2. Step 2: Convert to fraction form
   113,487.64/156,541.98 = 81,606.04/x
3. Step 3: Cross multiply
   113,487.64x = 156,541.98 × 81,606.04
4. Step 4: Simplify right side
   113,487.64x = 12,774,771,081.56
5. Step 5: Solve for x
   x = 12,774,771,081.56/113,487.64
6. Step 6: Final answer
   x = 112,565.31