Finding the Fourth Proportional to 142.82, 196.88 and 101.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142.82 : 196.88 = 101.47 : x
2. Step 2: Convert to fraction form
   142.82/196.88 = 101.47/x
3. Step 3: Cross multiply
   142.82x = 196.88 × 101.47
4. Step 4: Simplify right side
   142.82x = 19,976.43
5. Step 5: Solve for x
   x = 19,976.43/142.82
6. Step 6: Final answer
   x = 139.88