Finding the Fourth Proportional to 113,670.42, 156,861.57 and 62,685.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,670.42 : 156,861.57 = 62,685.30 : x
2. Step 2: Convert to fraction form
   113,670.42/156,861.57 = 62,685.30/x
3. Step 3: Cross multiply
   113,670.42x = 156,861.57 × 62,685.30
4. Step 4: Simplify right side
   113,670.42x = 9,832,914,573.92
5. Step 5: Solve for x
   x = 9,832,914,573.92/113,670.42
6. Step 6: Final answer
   x = 86,503.72