Finding the Fourth Proportional to 111.04, 153.39 and 83.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111.04 : 153.39 = 83.62 : x
2. Step 2: Convert to fraction form
   111.04/153.39 = 83.62/x
3. Step 3: Cross multiply
   111.04x = 153.39 × 83.62
4. Step 4: Simplify right side
   111.04x = 12,826.47
5. Step 5: Solve for x
   x = 12,826.47/111.04
6. Step 6: Final answer
   x = 115.51