Finding the Fourth Proportional to 282,131.78, 422,705.57 and 235,049.31

Step by Step Solution

1. Step 1: Write the proportion equation
   282,131.78 : 422,705.57 = 235,049.31 : x
2. Step 2: Convert to fraction form
   282,131.78/422,705.57 = 235,049.31/x
3. Step 3: Cross multiply
   282,131.78x = 422,705.57 × 235,049.31
4. Step 4: Simplify right side
   282,131.78x = 99,356,651,386.41
5. Step 5: Solve for x
   x = 99,356,651,386.41/282,131.78
6. Step 6: Final answer
   x = 352,163.99