Finding the Fourth Proportional to 131.01, 196.58 and 121.83

Step by Step Solution

1. Step 1: Write the proportion equation
   131.01 : 196.58 = 121.83 : x
2. Step 2: Convert to fraction form
   131.01/196.58 = 121.83/x
3. Step 3: Cross multiply
   131.01x = 196.58 × 121.83
4. Step 4: Simplify right side
   131.01x = 23,949.34
5. Step 5: Solve for x
   x = 23,949.34/131.01
6. Step 6: Final answer
   x = 182.81