Finding the Fourth Proportional to 113.06, 156.32 and 111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   113.06 : 156.32 = 111.32 : x
2. Step 2: Convert to fraction form
   113.06/156.32 = 111.32/x
3. Step 3: Cross multiply
   113.06x = 156.32 × 111.32
4. Step 4: Simplify right side
   113.06x = 17,401.54
5. Step 5: Solve for x
   x = 17,401.54/113.06
6. Step 6: Final answer
   x = 153.91