Finding the Fourth Proportional to 57,744.50, 79,687.45 and 31,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,744.50 : 79,687.45 = 31,248.50 : x
2. Step 2: Convert to fraction form
   57,744.50/79,687.45 = 31,248.50/x
3. Step 3: Cross multiply
   57,744.50x = 79,687.45 × 31,248.50
4. Step 4: Simplify right side
   57,744.50x = 2,490,113,281.33
5. Step 5: Solve for x
   x = 2,490,113,281.33/57,744.50
6. Step 6: Final answer
   x = 43,122.95