Finding the Fourth Proportional to 162,257.18, 223,915.39 and 89,658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,257.18 : 223,915.39 = 89,658.50 : x
2. Step 2: Convert to fraction form
   162,257.18/223,915.39 = 89,658.50/x
3. Step 3: Cross multiply
   162,257.18x = 223,915.39 × 89,658.50
4. Step 4: Simplify right side
   162,257.18x = 20,075,916,650.59
5. Step 5: Solve for x
   x = 20,075,916,650.59/162,257.18
6. Step 6: Final answer
   x = 123,728.99