Finding the Fourth Proportional to 131.05, 196.59 and 108.19

Step by Step Solution

1. Step 1: Write the proportion equation
   131.05 : 196.59 = 108.19 : x
2. Step 2: Convert to fraction form
   131.05/196.59 = 108.19/x
3. Step 3: Cross multiply
   131.05x = 196.59 × 108.19
4. Step 4: Simplify right side
   131.05x = 21,267.55
5. Step 5: Solve for x
   x = 21,267.55/131.05
6. Step 6: Final answer
   x = 162.29