Finding the Fourth Proportional to 131.59, 198.28 and 109.27

Step by Step Solution

1. Step 1: Write the proportion equation
   131.59 : 198.28 = 109.27 : x
2. Step 2: Convert to fraction form
   131.59/198.28 = 109.27/x
3. Step 3: Cross multiply
   131.59x = 198.28 × 109.27
4. Step 4: Simplify right side
   131.59x = 21,666.04
5. Step 5: Solve for x
   x = 21,666.04/131.59
6. Step 6: Final answer
   x = 164.64