Finding the Fourth Proportional to 111.49, 153.84 and 67.84

Step by Step Solution

1. Step 1: Write the proportion equation
   111.49 : 153.84 = 67.84 : x
2. Step 2: Convert to fraction form
   111.49/153.84 = 67.84/x
3. Step 3: Cross multiply
   111.49x = 153.84 × 67.84
4. Step 4: Simplify right side
   111.49x = 10,436.51
5. Step 5: Solve for x
   x = 10,436.51/111.49
6. Step 6: Final answer
   x = 93.61