Finding the Fourth Proportional to 105.98, 146.24 and 62.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105.98 : 146.24 = 62.30 : x
2. Step 2: Convert to fraction form
   105.98/146.24 = 62.30/x
3. Step 3: Cross multiply
   105.98x = 146.24 × 62.30
4. Step 4: Simplify right side
   105.98x = 9,111.04
5. Step 5: Solve for x
   x = 9,111.04/105.98
6. Step 6: Final answer
   x = 85.97