Finding the Fourth Proportional to 172,561.96, 258,493.02 and 89,281

Step by Step Solution

1. Step 1: Write the proportion equation
   172,561.96 : 258,493.02 = 89,281 : x
2. Step 2: Convert to fraction form
   172,561.96/258,493.02 = 89,281/x
3. Step 3: Cross multiply
   172,561.96x = 258,493.02 × 89,281
4. Step 4: Simplify right side
   172,561.96x = 23,078,515,318.62
5. Step 5: Solve for x
   x = 23,078,515,318.62/172,561.96
6. Step 6: Final answer
   x = 133,740.46