Finding the Fourth Proportional to 150,687.50, 207,958.49 and 83,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,687.50 : 207,958.49 = 83,619.50 : x
2. Step 2: Convert to fraction form
   150,687.50/207,958.49 = 83,619.50/x
3. Step 3: Cross multiply
   150,687.50x = 207,958.49 × 83,619.50
4. Step 4: Simplify right side
   150,687.50x = 17,389,384,954.56
5. Step 5: Solve for x
   x = 17,389,384,954.56/150,687.50
6. Step 6: Final answer
   x = 115,400.31