Finding the Fourth Proportional to 105.83, 145.98 and 67.04

Step by Step Solution

1. Step 1: Write the proportion equation
   105.83 : 145.98 = 67.04 : x
2. Step 2: Convert to fraction form
   105.83/145.98 = 67.04/x
3. Step 3: Cross multiply
   105.83x = 145.98 × 67.04
4. Step 4: Simplify right side
   105.83x = 9,786.50
5. Step 5: Solve for x
   x = 9,786.50/105.83
6. Step 6: Final answer
   x = 92.47