Finding the Fourth Proportional to 105.83, 146.03 and 62.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105.83 : 146.03 = 62.18 : x
2. Step 2: Convert to fraction form
   105.83/146.03 = 62.18/x
3. Step 3: Cross multiply
   105.83x = 146.03 × 62.18
4. Step 4: Simplify right side
   105.83x = 9,079.10
5. Step 5: Solve for x
   x = 9,079.10/105.83
6. Step 6: Final answer
   x = 85.79