Finding the Fourth Proportional to 82,861.56, 114,348.78 and 45,135.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,861.56 : 114,348.78 = 45,135.72 : x
2. Step 2: Convert to fraction form
   82,861.56/114,348.78 = 45,135.72/x
3. Step 3: Cross multiply
   82,861.56x = 114,348.78 × 45,135.72
4. Step 4: Simplify right side
   82,861.56x = 5,161,214,516.42
5. Step 5: Solve for x
   x = 5,161,214,516.42/82,861.56
6. Step 6: Final answer
   x = 62,287.20