Finding the Fourth Proportional to 70.79, 105.98 and 67.82

Step by Step Solution

1. Step 1: Write the proportion equation
   70.79 : 105.98 = 67.82 : x
2. Step 2: Convert to fraction form
   70.79/105.98 = 67.82/x
3. Step 3: Cross multiply
   70.79x = 105.98 × 67.82
4. Step 4: Simplify right side
   70.79x = 7,187.56
5. Step 5: Solve for x
   x = 7,187.56/70.79
6. Step 6: Final answer
   x = 101.53