Finding the Fourth Proportional to 257,925.31, 386,892.59 and 89,451.59

Step by Step Solution

1. Step 1: Write the proportion equation
   257,925.31 : 386,892.59 = 89,451.59 : x
2. Step 2: Convert to fraction form
   257,925.31/386,892.59 = 89,451.59/x
3. Step 3: Cross multiply
   257,925.31x = 386,892.59 × 89,451.59
4. Step 4: Simplify right side
   257,925.31x = 34,608,154,953.00
5. Step 5: Solve for x
   x = 34,608,154,953.00/257,925.31
6. Step 6: Final answer
   x = 134,178.98