Finding the Fourth Proportional to 111.84, 154.34 and 67.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 154.34 = 67.60 : x
2. Step 2: Convert to fraction form
   111.84/154.34 = 67.60/x
3. Step 3: Cross multiply
   111.84x = 154.34 × 67.60
4. Step 4: Simplify right side
   111.84x = 10,434.10
5. Step 5: Solve for x
   x = 10,434.10/111.84
6. Step 6: Final answer
   x = 93.30