Finding the Fourth Proportional to 172,563.96, 258,496.02 and 89,283

Step by Step Solution

1. Step 1: Write the proportion equation
   172,563.96 : 258,496.02 = 89,283 : x
2. Step 2: Convert to fraction form
   172,563.96/258,496.02 = 89,283/x
3. Step 3: Cross multiply
   172,563.96x = 258,496.02 × 89,283
4. Step 4: Simplify right side
   172,563.96x = 23,079,300,153.66
5. Step 5: Solve for x
   x = 23,079,300,153.66/172,563.96
6. Step 6: Final answer
   x = 133,743.45