Finding the Fourth Proportional to 150,109.37, 207,117 and 89,668.18

Step by Step Solution

1. Step 1: Write the proportion equation
   150,109.37 : 207,117 = 89,668.18 : x
2. Step 2: Convert to fraction form
   150,109.37/207,117 = 89,668.18/x
3. Step 3: Cross multiply
   150,109.37x = 207,117 × 89,668.18
4. Step 4: Simplify right side
   150,109.37x = 18,571,804,437.06
5. Step 5: Solve for x
   x = 18,571,804,437.06/150,109.37
6. Step 6: Final answer
   x = 123,721.82