Finding the Fourth Proportional to 149,499.74, 206,359.62 and 89,089.34

Step by Step Solution

1. Step 1: Write the proportion equation
   149,499.74 : 206,359.62 = 89,089.34 : x
2. Step 2: Convert to fraction form
   149,499.74/206,359.62 = 89,089.34/x
3. Step 3: Cross multiply
   149,499.74x = 206,359.62 × 89,089.34
4. Step 4: Simplify right side
   149,499.74x = 18,384,442,348.45
5. Step 5: Solve for x
   x = 18,384,442,348.45/149,499.74
6. Step 6: Final answer
   x = 122,973.07