Finding the Fourth Proportional to 57,061.56, 78,744.90 and 31,911

Step by Step Solution

1. Step 1: Write the proportion equation
   57,061.56 : 78,744.90 = 31,911 : x
2. Step 2: Convert to fraction form
   57,061.56/78,744.90 = 31,911/x
3. Step 3: Cross multiply
   57,061.56x = 78,744.90 × 31,911
4. Step 4: Simplify right side
   57,061.56x = 2,512,828,503.90
5. Step 5: Solve for x
   x = 2,512,828,503.90/57,061.56
6. Step 6: Final answer
   x = 44,037.15