Finding the Fourth Proportional to 357,354.56, 493,155.42 and 196,216.40

Step by Step Solution

1. Step 1: Write the proportion equation
   357,354.56 : 493,155.42 = 196,216.40 : x
2. Step 2: Convert to fraction form
   357,354.56/493,155.42 = 196,216.40/x
3. Step 3: Cross multiply
   357,354.56x = 493,155.42 × 196,216.40
4. Step 4: Simplify right side
   357,354.56x = 96,765,181,152.89
5. Step 5: Solve for x
   x = 96,765,181,152.89/357,354.56
6. Step 6: Final answer
   x = 270,782.00