Finding the Fourth Proportional to 144.72, 216.72 and 101.43

Step by Step Solution

1. Step 1: Write the proportion equation
   144.72 : 216.72 = 101.43 : x
2. Step 2: Convert to fraction form
   144.72/216.72 = 101.43/x
3. Step 3: Cross multiply
   144.72x = 216.72 × 101.43
4. Step 4: Simplify right side
   144.72x = 21,981.91
5. Step 5: Solve for x
   x = 21,981.91/144.72
6. Step 6: Final answer
   x = 151.89