Finding the Fourth Proportional to 113.69, 156.88 and 67.08

Step by Step Solution

1. Step 1: Write the proportion equation
   113.69 : 156.88 = 67.08 : x
2. Step 2: Convert to fraction form
   113.69/156.88 = 67.08/x
3. Step 3: Cross multiply
   113.69x = 156.88 × 67.08
4. Step 4: Simplify right side
   113.69x = 10,522.56
5. Step 5: Solve for x
   x = 10,522.56/113.69
6. Step 6: Final answer
   x = 92.56