Finding the Fourth Proportional to 470,521.40, 649,323.50 and 255,661.48

Step by Step Solution

1. Step 1: Write the proportion equation
   470,521.40 : 649,323.50 = 255,661.48 : x
2. Step 2: Convert to fraction form
   470,521.40/649,323.50 = 255,661.48/x
3. Step 3: Cross multiply
   470,521.40x = 649,323.50 × 255,661.48
4. Step 4: Simplify right side
   470,521.40x = 166,007,002,483.86
5. Step 5: Solve for x
   x = 166,007,002,483.86/470,521.40
6. Step 6: Final answer
   x = 352,814.99