Finding the Fourth Proportional to 57,749.50, 79,694.31 and 31,253.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,749.50 : 79,694.31 = 31,253.50 : x
2. Step 2: Convert to fraction form
   57,749.50/79,694.31 = 31,253.50/x
3. Step 3: Cross multiply
   57,749.50x = 79,694.31 × 31,253.50
4. Step 4: Simplify right side
   57,749.50x = 2,490,726,117.59
5. Step 5: Solve for x
   x = 2,490,726,117.59/57,749.50
6. Step 6: Final answer
   x = 43,129.83