Finding the Fourth Proportional to 57,472.72, 79,307.22 and 31,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,472.72 : 79,307.22 = 31,978.24 : x
2. Step 2: Convert to fraction form
   57,472.72/79,307.22 = 31,978.24/x
3. Step 3: Cross multiply
   57,472.72x = 79,307.22 × 31,978.24
4. Step 4: Simplify right side
   57,472.72x = 2,536,105,314.89
5. Step 5: Solve for x
   x = 2,536,105,314.89/57,472.72
6. Step 6: Final answer
   x = 44,127.11