Finding the Fourth Proportional to 57,147.60, 78,861.42 and 31,996.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,147.60 : 78,861.42 = 31,996.56 : x
2. Step 2: Convert to fraction form
   57,147.60/78,861.42 = 31,996.56/x
3. Step 3: Cross multiply
   57,147.60x = 78,861.42 × 31,996.56
4. Step 4: Simplify right side
   57,147.60x = 2,523,294,156.72
5. Step 5: Solve for x
   x = 2,523,294,156.72/57,147.60
6. Step 6: Final answer
   x = 44,153.98