Finding the Fourth Proportional to 67.91, 101.87 and 19.82

Step by Step Solution

1. Step 1: Write the proportion equation
   67.91 : 101.87 = 19.82 : x
2. Step 2: Convert to fraction form
   67.91/101.87 = 19.82/x
3. Step 3: Cross multiply
   67.91x = 101.87 × 19.82
4. Step 4: Simplify right side
   67.91x = 2,019.06
5. Step 5: Solve for x
   x = 2,019.06/67.91
6. Step 6: Final answer
   x = 29.73