Finding the Fourth Proportional to 196.08, 270.72 and 118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196.08 : 270.72 = 118.50 : x
2. Step 2: Convert to fraction form
   196.08/270.72 = 118.50/x
3. Step 3: Cross multiply
   196.08x = 270.72 × 118.50
4. Step 4: Simplify right side
   196.08x = 32,080.32
5. Step 5: Solve for x
   x = 32,080.32/196.08
6. Step 6: Final answer
   x = 163.61