Finding the Fourth Proportional to 150,589.94, 207,818.61 and 83,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,589.94 : 207,818.61 = 83,520.50 : x
2. Step 2: Convert to fraction form
   150,589.94/207,818.61 = 83,520.50/x
3. Step 3: Cross multiply
   150,589.94x = 207,818.61 × 83,520.50
4. Step 4: Simplify right side
   150,589.94x = 17,357,114,216.51
5. Step 5: Solve for x
   x = 17,357,114,216.51/150,589.94
6. Step 6: Final answer
   x = 115,260.78