Finding the Fourth Proportional to 150,669.69, 207,910.42 and 89,405.32

Step by Step Solution

1. Step 1: Write the proportion equation
   150,669.69 : 207,910.42 = 89,405.32 : x
2. Step 2: Convert to fraction form
   150,669.69/207,910.42 = 89,405.32/x
3. Step 3: Cross multiply
   150,669.69x = 207,910.42 × 89,405.32
4. Step 4: Simplify right side
   150,669.69x = 18,588,296,888.15
5. Step 5: Solve for x
   x = 18,588,296,888.15/150,669.69
6. Step 6: Final answer
   x = 123,371.18