Finding the Fourth Proportional to 482,086.62, 722,838.24 and 215,797.50

Step by Step Solution

1. Step 1: Write the proportion equation
   482,086.62 : 722,838.24 = 215,797.50 : x
2. Step 2: Convert to fraction form
   482,086.62/722,838.24 = 215,797.50/x
3. Step 3: Cross multiply
   482,086.62x = 722,838.24 × 215,797.50
4. Step 4: Simplify right side
   482,086.62x = 155,986,685,096.40
5. Step 5: Solve for x
   x = 155,986,685,096.40/482,086.62
6. Step 6: Final answer
   x = 323,565.68