Finding the Fourth Proportional to 357,978.24, 493,900.56 and 235,435.68

Step by Step Solution

1. Step 1: Write the proportion equation
   357,978.24 : 493,900.56 = 235,435.68 : x
2. Step 2: Convert to fraction form
   357,978.24/493,900.56 = 235,435.68/x
3. Step 3: Cross multiply
   357,978.24x = 493,900.56 × 235,435.68
4. Step 4: Simplify right side
   357,978.24x = 116,281,814,195.98
5. Step 5: Solve for x
   x = 116,281,814,195.98/357,978.24
6. Step 6: Final answer
   x = 324,829.28