Finding the Fourth Proportional to 57,089.74, 78,781.42 and 31,593.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,089.74 : 78,781.42 = 31,593.72 : x
2. Step 2: Convert to fraction form
   57,089.74/78,781.42 = 31,593.72/x
3. Step 3: Cross multiply
   57,089.74x = 78,781.42 × 31,593.72
4. Step 4: Simplify right side
   57,089.74x = 2,488,998,232.48
5. Step 5: Solve for x
   x = 2,488,998,232.48/57,089.74
6. Step 6: Final answer
   x = 43,597.99