Finding the Fourth Proportional to 257,926.43, 386,894.27 and 89,452.71

Step by Step Solution

1. Step 1: Write the proportion equation
   257,926.43 : 386,894.27 = 89,452.71 : x
2. Step 2: Convert to fraction form
   257,926.43/386,894.27 = 89,452.71/x
3. Step 3: Cross multiply
   257,926.43x = 386,894.27 × 89,452.71
4. Step 4: Simplify right side
   257,926.43x = 34,608,741,158.60
5. Step 5: Solve for x
   x = 34,608,741,158.60/257,926.43
6. Step 6: Final answer
   x = 134,180.67