Finding the Fourth Proportional to 57,032.10, 78,709.98 and 31,540.39

Step by Step Solution

1. Step 1: Write the proportion equation
   57,032.10 : 78,709.98 = 31,540.39 : x
2. Step 2: Convert to fraction form
   57,032.10/78,709.98 = 31,540.39/x
3. Step 3: Cross multiply
   57,032.10x = 78,709.98 × 31,540.39
4. Step 4: Simplify right side
   57,032.10x = 2,482,543,210.18
5. Step 5: Solve for x
   x = 2,482,543,210.18/57,032.10
6. Step 6: Final answer
   x = 43,528.88