Finding the Fourth Proportional to 57,068.72, 78,755.88 and 31,918.16

Step by Step Solution

1. Step 1: Write the proportion equation
   57,068.72 : 78,755.88 = 31,918.16 : x
2. Step 2: Convert to fraction form
   57,068.72/78,755.88 = 31,918.16/x
3. Step 3: Cross multiply
   57,068.72x = 78,755.88 × 31,918.16
4. Step 4: Simplify right side
   57,068.72x = 2,513,742,778.78
5. Step 5: Solve for x
   x = 2,513,742,778.78/57,068.72
6. Step 6: Final answer
   x = 44,047.65