Finding the Fourth Proportional to 424,308.42, 585,399.89 and 263,105.46

Step by Step Solution

1. Step 1: Write the proportion equation
   424,308.42 : 585,399.89 = 263,105.46 : x
2. Step 2: Convert to fraction form
   424,308.42/585,399.89 = 263,105.46/x
3. Step 3: Cross multiply
   424,308.42x = 585,399.89 × 263,105.46
4. Step 4: Simplify right side
   424,308.42x = 154,021,907,342.40
5. Step 5: Solve for x
   x = 154,021,907,342.40/424,308.42
6. Step 6: Final answer
   x = 362,995.17