Finding the Fourth Proportional to 155,490.78, 233,469.45 and 89,005.98

Step by Step Solution

1. Step 1: Write the proportion equation
   155,490.78 : 233,469.45 = 89,005.98 : x
2. Step 2: Convert to fraction form
   155,490.78/233,469.45 = 89,005.98/x
3. Step 3: Cross multiply
   155,490.78x = 233,469.45 × 89,005.98
4. Step 4: Simplify right side
   155,490.78x = 20,780,177,197.31
5. Step 5: Solve for x
   x = 20,780,177,197.31/155,490.78
6. Step 6: Final answer
   x = 133,642.50