Finding the Fourth Proportional to 150,131.50, 207,175.39 and 89,735.47

Step by Step Solution

1. Step 1: Write the proportion equation
   150,131.50 : 207,175.39 = 89,735.47 : x
2. Step 2: Convert to fraction form
   150,131.50/207,175.39 = 89,735.47/x
3. Step 3: Cross multiply
   150,131.50x = 207,175.39 × 89,735.47
4. Step 4: Simplify right side
   150,131.50x = 18,590,980,251.81
5. Step 5: Solve for x
   x = 18,590,980,251.81/150,131.50
6. Step 6: Final answer
   x = 123,831.31