Finding the Fourth Proportional to 131.32, 196.69 and 108.23

Step by Step Solution

1. Step 1: Write the proportion equation
   131.32 : 196.69 = 108.23 : x
2. Step 2: Convert to fraction form
   131.32/196.69 = 108.23/x
3. Step 3: Cross multiply
   131.32x = 196.69 × 108.23
4. Step 4: Simplify right side
   131.32x = 21,287.51
5. Step 5: Solve for x
   x = 21,287.51/131.32
6. Step 6: Final answer
   x = 162.11