Finding the Fourth Proportional to 67.92, 101.89 and 19.83

Step by Step Solution

1. Step 1: Write the proportion equation
   67.92 : 101.89 = 19.83 : x
2. Step 2: Convert to fraction form
   67.92/101.89 = 19.83/x
3. Step 3: Cross multiply
   67.92x = 101.89 × 19.83
4. Step 4: Simplify right side
   67.92x = 2,020.31
5. Step 5: Solve for x
   x = 2,020.31/67.92
6. Step 6: Final answer
   x = 29.74