Finding the Fourth Proportional to 298,016.10, 411,414.59 and 229,880.12

Step by Step Solution

1. Step 1: Write the proportion equation
   298,016.10 : 411,414.59 = 229,880.12 : x
2. Step 2: Convert to fraction form
   298,016.10/411,414.59 = 229,880.12/x
3. Step 3: Cross multiply
   298,016.10x = 411,414.59 × 229,880.12
4. Step 4: Simplify right side
   298,016.10x = 94,576,032,112.48
5. Step 5: Solve for x
   x = 94,576,032,112.48/298,016.10
6. Step 6: Final answer
   x = 317,352.09