Finding the Fourth Proportional to 150,666.50, 207,919.78 and 83,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,666.50 : 207,919.78 = 83,598.50 : x
2. Step 2: Convert to fraction form
   150,666.50/207,919.78 = 83,598.50/x
3. Step 3: Cross multiply
   150,666.50x = 207,919.78 × 83,598.50
4. Step 4: Simplify right side
   150,666.50x = 17,381,781,728.33
5. Step 5: Solve for x
   x = 17,381,781,728.33/150,666.50
6. Step 6: Final answer
   x = 115,365.94