Finding the Fourth Proportional to 105.09, 144.93 and 73.59

Step by Step Solution

1. Step 1: Write the proportion equation
   105.09 : 144.93 = 73.59 : x
2. Step 2: Convert to fraction form
   105.09/144.93 = 73.59/x
3. Step 3: Cross multiply
   105.09x = 144.93 × 73.59
4. Step 4: Simplify right side
   105.09x = 10,665.40
5. Step 5: Solve for x
   x = 10,665.40/105.09
6. Step 6: Final answer
   x = 101.49