Finding the Fourth Proportional to 150,109.08, 207,116.64 and 89,667.92

Step by Step Solution

1. Step 1: Write the proportion equation
   150,109.08 : 207,116.64 = 89,667.92 : x
2. Step 2: Convert to fraction form
   150,109.08/207,116.64 = 89,667.92/x
3. Step 3: Cross multiply
   150,109.08x = 207,116.64 × 89,667.92
4. Step 4: Simplify right side
   150,109.08x = 18,571,718,823.98
5. Step 5: Solve for x
   x = 18,571,718,823.98/150,109.08
6. Step 6: Final answer
   x = 123,721.49