Finding the Fourth Proportional to 150,286.50, 207,401.94 and 83,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,286.50 : 207,401.94 = 83,218.50 : x
2. Step 2: Convert to fraction form
   150,286.50/207,401.94 = 83,218.50/x
3. Step 3: Cross multiply
   150,286.50x = 207,401.94 × 83,218.50
4. Step 4: Simplify right side
   150,286.50x = 17,259,678,343.89
5. Step 5: Solve for x
   x = 17,259,678,343.89/150,286.50
6. Step 6: Final answer
   x = 114,845.17