Finding the Fourth Proportional to 105.33, 145.37 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105.33 : 145.37 = 67.98 : x
2. Step 2: Convert to fraction form
   105.33/145.37 = 67.98/x
3. Step 3: Cross multiply
   105.33x = 145.37 × 67.98
4. Step 4: Simplify right side
   105.33x = 9,882.25
5. Step 5: Solve for x
   x = 9,882.25/105.33
6. Step 6: Final answer
   x = 93.82