Finding the Fourth Proportional to 469,667.98, 648,143.20 and 254,809.81

Step by Step Solution

1. Step 1: Write the proportion equation
   469,667.98 : 648,143.20 = 254,809.81 : x
2. Step 2: Convert to fraction form
   469,667.98/648,143.20 = 254,809.81/x
3. Step 3: Cross multiply
   469,667.98x = 648,143.20 × 254,809.81
4. Step 4: Simplify right side
   469,667.98x = 165,153,245,644.79
5. Step 5: Solve for x
   x = 165,153,245,644.79/469,667.98
6. Step 6: Final answer
   x = 351,638.29