Finding the Fourth Proportional to 57,112.16, 78,813.54 and 31,617.04

Step by Step Solution

1. Step 1: Write the proportion equation
   57,112.16 : 78,813.54 = 31,617.04 : x
2. Step 2: Convert to fraction form
   57,112.16/78,813.54 = 31,617.04/x
3. Step 3: Cross multiply
   57,112.16x = 78,813.54 × 31,617.04
4. Step 4: Simplify right side
   57,112.16x = 2,491,850,846.72
5. Step 5: Solve for x
   x = 2,491,850,846.72/57,112.16
6. Step 6: Final answer
   x = 43,630.83