Finding the Fourth Proportional to 57,751.50, 79,697.31 and 31,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,751.50 : 79,697.31 = 31,255.50 : x
2. Step 2: Convert to fraction form
   57,751.50/79,697.31 = 31,255.50/x
3. Step 3: Cross multiply
   57,751.50x = 79,697.31 × 31,255.50
4. Step 4: Simplify right side
   57,751.50x = 2,490,979,272.71
5. Step 5: Solve for x
   x = 2,490,979,272.71/57,751.50
6. Step 6: Final answer
   x = 43,132.72