Finding the Fourth Proportional to 105.01, 144.73 and 71.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105.01 : 144.73 = 71.79 : x
2. Step 2: Convert to fraction form
   105.01/144.73 = 71.79/x
3. Step 3: Cross multiply
   105.01x = 144.73 × 71.79
4. Step 4: Simplify right side
   105.01x = 10,390.17
5. Step 5: Solve for x
   x = 10,390.17/105.01
6. Step 6: Final answer
   x = 98.94