Finding the Fourth Proportional to 149,499.30, 206,359.02 and 89,088.89

Step by Step Solution

1. Step 1: Write the proportion equation
   149,499.30 : 206,359.02 = 89,088.89 : x
2. Step 2: Convert to fraction form
   149,499.30/206,359.02 = 89,088.89/x
3. Step 3: Cross multiply
   149,499.30x = 206,359.02 × 89,088.89
4. Step 4: Simplify right side
   149,499.30x = 18,384,296,033.29
5. Step 5: Solve for x
   x = 18,384,296,033.29/149,499.30
6. Step 6: Final answer
   x = 122,972.46