Finding the Fourth Proportional to 196.42, 294.83 and 145.12

Step by Step Solution

1. Step 1: Write the proportion equation
   196.42 : 294.83 = 145.12 : x
2. Step 2: Convert to fraction form
   196.42/294.83 = 145.12/x
3. Step 3: Cross multiply
   196.42x = 294.83 × 145.12
4. Step 4: Simplify right side
   196.42x = 42,785.73
5. Step 5: Solve for x
   x = 42,785.73/196.42
6. Step 6: Final answer
   x = 217.83