Finding the Fourth Proportional to 105.97, 146.83 and 103.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105.97 : 146.83 = 103.47 : x
2. Step 2: Convert to fraction form
   105.97/146.83 = 103.47/x
3. Step 3: Cross multiply
   105.97x = 146.83 × 103.47
4. Step 4: Simplify right side
   105.97x = 15,192.50
5. Step 5: Solve for x
   x = 15,192.50/105.97
6. Step 6: Final answer
   x = 143.37