Finding the Fourth Proportional to 111.84, 154.35 and 65.23

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 154.35 = 65.23 : x
2. Step 2: Convert to fraction form
   111.84/154.35 = 65.23/x
3. Step 3: Cross multiply
   111.84x = 154.35 × 65.23
4. Step 4: Simplify right side
   111.84x = 10,068.25
5. Step 5: Solve for x
   x = 10,068.25/111.84
6. Step 6: Final answer
   x = 90.02