Finding the Fourth Proportional to 150,667.50, 207,921.16 and 83,599.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,667.50 : 207,921.16 = 83,599.50 : x
2. Step 2: Convert to fraction form
   150,667.50/207,921.16 = 83,599.50/x
3. Step 3: Cross multiply
   150,667.50x = 207,921.16 × 83,599.50
4. Step 4: Simplify right side
   150,667.50x = 17,382,105,015.42
5. Step 5: Solve for x
   x = 17,382,105,015.42/150,667.50
6. Step 6: Final answer
   x = 115,367.32