Finding the Fourth Proportional to 57,123.12, 78,829.86 and 31,972.62

Step by Step Solution

1. Step 1: Write the proportion equation
   57,123.12 : 78,829.86 = 31,972.62 : x
2. Step 2: Convert to fraction form
   57,123.12/78,829.86 = 31,972.62/x
3. Step 3: Cross multiply
   57,123.12x = 78,829.86 × 31,972.62
4. Step 4: Simplify right side
   57,123.12x = 2,520,397,158.43
5. Step 5: Solve for x
   x = 2,520,397,158.43/57,123.12
6. Step 6: Final answer
   x = 44,122.19