Finding the Fourth Proportional to 469,086.43, 647,321.93 and 254,221.88

Step by Step Solution

1. Step 1: Write the proportion equation
   469,086.43 : 647,321.93 = 254,221.88 : x
2. Step 2: Convert to fraction form
   469,086.43/647,321.93 = 254,221.88/x
3. Step 3: Cross multiply
   469,086.43x = 647,321.93 × 254,221.88
4. Step 4: Simplify right side
   469,086.43x = 164,563,398,009.83
5. Step 5: Solve for x
   x = 164,563,398,009.83/469,086.43
6. Step 6: Final answer
   x = 350,816.80