Finding the Fourth Proportional to 288,608.72, 398,245.52 and 159,529.75

Step by Step Solution

1. Step 1: Write the proportion equation
   288,608.72 : 398,245.52 = 159,529.75 : x
2. Step 2: Convert to fraction form
   288,608.72/398,245.52 = 159,529.75/x
3. Step 3: Cross multiply
   288,608.72x = 398,245.52 × 159,529.75
4. Step 4: Simplify right side
   288,608.72x = 63,532,010,426.92
5. Step 5: Solve for x
   x = 63,532,010,426.92/288,608.72
6. Step 6: Final answer
   x = 220,131.99