Finding the Fourth Proportional to 57,116.55, 78,820.82 and 31,966.05

Step by Step Solution

1. Step 1: Write the proportion equation
   57,116.55 : 78,820.82 = 31,966.05 : x
2. Step 2: Convert to fraction form
   57,116.55/78,820.82 = 31,966.05/x
3. Step 3: Cross multiply
   57,116.55x = 78,820.82 × 31,966.05
4. Step 4: Simplify right side
   57,116.55x = 2,519,589,719.23
5. Step 5: Solve for x
   x = 2,519,589,719.23/57,116.55
6. Step 6: Final answer
   x = 44,113.13