Finding the Fourth Proportional to 57,752.50, 79,698.72 and 31,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,752.50 : 79,698.72 = 31,256.50 : x
2. Step 2: Convert to fraction form
   57,752.50/79,698.72 = 31,256.50/x
3. Step 3: Cross multiply
   57,752.50x = 79,698.72 × 31,256.50
4. Step 4: Simplify right side
   57,752.50x = 2,491,103,041.68
5. Step 5: Solve for x
   x = 2,491,103,041.68/57,752.50
6. Step 6: Final answer
   x = 43,134.12