Finding the Fourth Proportional to 57,109.72, 78,812.46 and 31,959.16

Step by Step Solution

1. Step 1: Write the proportion equation
   57,109.72 : 78,812.46 = 31,959.16 : x
2. Step 2: Convert to fraction form
   57,109.72/78,812.46 = 31,959.16/x
3. Step 3: Cross multiply
   57,109.72x = 78,812.46 × 31,959.16
4. Step 4: Simplify right side
   57,109.72x = 2,518,780,019.13
5. Step 5: Solve for x
   x = 2,518,780,019.13/57,109.72
6. Step 6: Final answer
   x = 44,104.23