Finding the Fourth Proportional to 57,156.29, 78,874.82 and 31,662.58

Step by Step Solution

1. Step 1: Write the proportion equation
   57,156.29 : 78,874.82 = 31,662.58 : x
2. Step 2: Convert to fraction form
   57,156.29/78,874.82 = 31,662.58/x
3. Step 3: Cross multiply
   57,156.29x = 78,874.82 × 31,662.58
4. Step 4: Simplify right side
   57,156.29x = 2,497,379,903.86
5. Step 5: Solve for x
   x = 2,497,379,903.86/57,156.29
6. Step 6: Final answer
   x = 43,693.88