Finding the Fourth Proportional to 298,057.98, 411,314.31 and 163,921.98

Step by Step Solution

1. Step 1: Write the proportion equation
   298,057.98 : 411,314.31 = 163,921.98 : x
2. Step 2: Convert to fraction form
   298,057.98/411,314.31 = 163,921.98/x
3. Step 3: Cross multiply
   298,057.98x = 411,314.31 × 163,921.98
4. Step 4: Simplify right side
   298,057.98x = 67,423,456,097.53
5. Step 5: Solve for x
   x = 67,423,456,097.53/298,057.98
6. Step 6: Final answer
   x = 226,209.20