Finding the Fourth Proportional to 57,061.69, 78,744.67 and 31,911.19

Step by Step Solution

1. Step 1: Write the proportion equation
   57,061.69 : 78,744.67 = 31,911.19 : x
2. Step 2: Convert to fraction form
   57,061.69/78,744.67 = 31,911.19/x
3. Step 3: Cross multiply
   57,061.69x = 78,744.67 × 31,911.19
4. Step 4: Simplify right side
   57,061.69x = 2,512,836,125.86
5. Step 5: Solve for x
   x = 2,512,836,125.86/57,061.69
6. Step 6: Final answer
   x = 44,037.18