Finding the Fourth Proportional to 196.00, 270.20 and 156.79

Step by Step Solution

1. Step 1: Write the proportion equation
   196.00 : 270.20 = 156.79 : x
2. Step 2: Convert to fraction form
   196.00/270.20 = 156.79/x
3. Step 3: Cross multiply
   196.00x = 270.20 × 156.79
4. Step 4: Simplify right side
   196.00x = 42,362.52
5. Step 5: Solve for x
   x = 42,362.52/196.00
6. Step 6: Final answer
   x = 216.14