Finding the Fourth Proportional to 196.68, 294.86 and 145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   196.68 : 294.86 = 145.25 : x
2. Step 2: Convert to fraction form
   196.68/294.86 = 145.25/x
3. Step 3: Cross multiply
   196.68x = 294.86 × 145.25
4. Step 4: Simplify right side
   196.68x = 42,826.21
5. Step 5: Solve for x
   x = 42,826.21/196.68
6. Step 6: Final answer
   x = 217.75