Finding the Fourth Proportional to 57,153.60, 78,864.84 and 31,656.42

Step by Step Solution

1. Step 1: Write the proportion equation
   57,153.60 : 78,864.84 = 31,656.42 : x
2. Step 2: Convert to fraction form
   57,153.60/78,864.84 = 31,656.42/x
3. Step 3: Cross multiply
   57,153.60x = 78,864.84 × 31,656.42
4. Step 4: Simplify right side
   57,153.60x = 2,496,578,498.27
5. Step 5: Solve for x
   x = 2,496,578,498.27/57,153.60
6. Step 6: Final answer
   x = 43,681.91