Finding the Fourth Proportional to 150,390.59, 207,536.27 and 89,177.96

Step by Step Solution

1. Step 1: Write the proportion equation
   150,390.59 : 207,536.27 = 89,177.96 : x
2. Step 2: Convert to fraction form
   150,390.59/207,536.27 = 89,177.96/x
3. Step 3: Cross multiply
   150,390.59x = 207,536.27 × 89,177.96
4. Step 4: Simplify right side
   150,390.59x = 18,507,659,701.04
5. Step 5: Solve for x
   x = 18,507,659,701.04/150,390.59
6. Step 6: Final answer
   x = 123,063.95