Finding the Fourth Proportional to 149,496.30, 206,354.88 and 89,085.89

Step by Step Solution

1. Step 1: Write the proportion equation
   149,496.30 : 206,354.88 = 89,085.89 : x
2. Step 2: Convert to fraction form
   149,496.30/206,354.88 = 89,085.89/x
3. Step 3: Cross multiply
   149,496.30x = 206,354.88 × 89,085.89
4. Step 4: Simplify right side
   149,496.30x = 18,383,307,882.70
5. Step 5: Solve for x
   x = 18,383,307,882.70/149,496.30
6. Step 6: Final answer
   x = 122,968.32