Finding the Fourth Proportional to 109.42, 150.96 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   109.42 : 150.96 = 67.98 : x
2. Step 2: Convert to fraction form
   109.42/150.96 = 67.98/x
3. Step 3: Cross multiply
   109.42x = 150.96 × 67.98
4. Step 4: Simplify right side
   109.42x = 10,262.26
5. Step 5: Solve for x
   x = 10,262.26/109.42
6. Step 6: Final answer
   x = 93.79