Finding the Fourth Proportional to 142.41, 196.76 and 131.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142.41 : 196.76 = 131.48 : x
2. Step 2: Convert to fraction form
   142.41/196.76 = 131.48/x
3. Step 3: Cross multiply
   142.41x = 196.76 × 131.48
4. Step 4: Simplify right side
   142.41x = 25,870.00
5. Step 5: Solve for x
   x = 25,870.00/142.41
6. Step 6: Final answer
   x = 181.66