Finding the Fourth Proportional to 95,147.34, 131,178.86 and 81,861.31

Step by Step Solution

1. Step 1: Write the proportion equation
   95,147.34 : 131,178.86 = 81,861.31 : x
2. Step 2: Convert to fraction form
   95,147.34/131,178.86 = 81,861.31/x
3. Step 3: Cross multiply
   95,147.34x = 131,178.86 × 81,861.31
4. Step 4: Simplify right side
   95,147.34x = 10,738,472,914.60
5. Step 5: Solve for x
   x = 10,738,472,914.60/95,147.34
6. Step 6: Final answer
   x = 112,861.52