Finding the Fourth Proportional to 57,056.88, 78,731.52 and 31,561.48

Step by Step Solution

1. Step 1: Write the proportion equation
   57,056.88 : 78,731.52 = 31,561.48 : x
2. Step 2: Convert to fraction form
   57,056.88/78,731.52 = 31,561.48/x
3. Step 3: Cross multiply
   57,056.88x = 78,731.52 × 31,561.48
4. Step 4: Simplify right side
   57,056.88x = 2,484,883,293.85
5. Step 5: Solve for x
   x = 2,484,883,293.85/57,056.88
6. Step 6: Final answer
   x = 43,550.98