Finding the Fourth Proportional to 141.50, 196.31 and 140.15

Step by Step Solution

1. Step 1: Write the proportion equation
   141.50 : 196.31 = 140.15 : x
2. Step 2: Convert to fraction form
   141.50/196.31 = 140.15/x
3. Step 3: Cross multiply
   141.50x = 196.31 × 140.15
4. Step 4: Simplify right side
   141.50x = 27,513.69
5. Step 5: Solve for x
   x = 27,513.69/141.50
6. Step 6: Final answer
   x = 194.44