Finding the Fourth Proportional to 57,306.52, 79,081.71 and 31,811.38

Step by Step Solution

1. Step 1: Write the proportion equation
   57,306.52 : 79,081.71 = 31,811.38 : x
2. Step 2: Convert to fraction form
   57,306.52/79,081.71 = 31,811.38/x
3. Step 3: Cross multiply
   57,306.52x = 79,081.71 × 31,811.38
4. Step 4: Simplify right side
   57,306.52x = 2,515,698,327.86
5. Step 5: Solve for x
   x = 2,515,698,327.86/57,306.52
6. Step 6: Final answer
   x = 43,898.99