Finding the Fourth Proportional to 336.78, 464.76 and 196.88

Step by Step Solution

1. Step 1: Write the proportion equation
   336.78 : 464.76 = 196.88 : x
2. Step 2: Convert to fraction form
   336.78/464.76 = 196.88/x
3. Step 3: Cross multiply
   336.78x = 464.76 × 196.88
4. Step 4: Simplify right side
   336.78x = 91,499.63
5. Step 5: Solve for x
   x = 91,499.63/336.78
6. Step 6: Final answer
   x = 271.69