Finding the Fourth Proportional to 106.46, 159.89 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   106.46 : 159.89 = 67.98 : x
2. Step 2: Convert to fraction form
   106.46/159.89 = 67.98/x
3. Step 3: Cross multiply
   106.46x = 159.89 × 67.98
4. Step 4: Simplify right side
   106.46x = 10,868.98
5. Step 5: Solve for x
   x = 10,868.98/106.46
6. Step 6: Final answer
   x = 102.10