Finding the Fourth Proportional to 57,604.50, 79,494.21 and 31,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,604.50 : 79,494.21 = 31,108.50 : x
2. Step 2: Convert to fraction form
   57,604.50/79,494.21 = 31,108.50/x
3. Step 3: Cross multiply
   57,604.50x = 79,494.21 × 31,108.50
4. Step 4: Simplify right side
   57,604.50x = 2,472,945,631.79
5. Step 5: Solve for x
   x = 2,472,945,631.79/57,604.50
6. Step 6: Final answer
   x = 42,929.73