Finding the Fourth Proportional to 424,196.64, 585,394.72 and 230,604.31

Step by Step Solution

1. Step 1: Write the proportion equation
   424,196.64 : 585,394.72 = 230,604.31 : x
2. Step 2: Convert to fraction form
   424,196.64/585,394.72 = 230,604.31/x
3. Step 3: Cross multiply
   424,196.64x = 585,394.72 × 230,604.31
4. Step 4: Simplify right side
   424,196.64x = 134,994,543,443.25
5. Step 5: Solve for x
   x = 134,994,543,443.25/424,196.64
6. Step 6: Final answer
   x = 318,235.77