Finding the Fourth Proportional to 443,833.50, 665,744.77 and 422,317.06

Step by Step Solution

1. Step 1: Write the proportion equation
   443,833.50 : 665,744.77 = 422,317.06 : x
2. Step 2: Convert to fraction form
   443,833.50/665,744.77 = 422,317.06/x
3. Step 3: Cross multiply
   443,833.50x = 665,744.77 × 422,317.06
4. Step 4: Simplify right side
   443,833.50x = 281,155,373,976.78
5. Step 5: Solve for x
   x = 281,155,373,976.78/443,833.50
6. Step 6: Final answer
   x = 633,470.38