Finding the Fourth Proportional to 57,111.88, 78,813.42 and 31,961.32

Step by Step Solution

1. Step 1: Write the proportion equation
   57,111.88 : 78,813.42 = 31,961.32 : x
2. Step 2: Convert to fraction form
   57,111.88/78,813.42 = 31,961.32/x
3. Step 3: Cross multiply
   57,111.88x = 78,813.42 × 31,961.32
4. Step 4: Simplify right side
   57,111.88x = 2,518,980,936.91
5. Step 5: Solve for x
   x = 2,518,980,936.91/57,111.88
6. Step 6: Final answer
   x = 44,106.08