Finding the Fourth Proportional to 172,569.96, 258,505.02 and 89,289

Step by Step Solution

1. Step 1: Write the proportion equation
   172,569.96 : 258,505.02 = 89,289 : x
2. Step 2: Convert to fraction form
   172,569.96/258,505.02 = 89,289/x
3. Step 3: Cross multiply
   172,569.96x = 258,505.02 × 89,289
4. Step 4: Simplify right side
   172,569.96x = 23,081,654,730.78
5. Step 5: Solve for x
   x = 23,081,654,730.78/172,569.96
6. Step 6: Final answer
   x = 133,752.45