Finding the Fourth Proportional to 150,672.69, 207,914.56 and 89,408.32

Step by Step Solution

1. Step 1: Write the proportion equation
   150,672.69 : 207,914.56 = 89,408.32 : x
2. Step 2: Convert to fraction form
   150,672.69/207,914.56 = 89,408.32/x
3. Step 3: Cross multiply
   150,672.69x = 207,914.56 × 89,408.32
4. Step 4: Simplify right side
   150,672.69x = 18,589,291,513.14
5. Step 5: Solve for x
   x = 18,589,291,513.14/150,672.69
6. Step 6: Final answer
   x = 123,375.32