Finding the Fourth Proportional to 113.35, 156.42 and 69.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113.35 : 156.42 = 69.69 : x
2. Step 2: Convert to fraction form
   113.35/156.42 = 69.69/x
3. Step 3: Cross multiply
   113.35x = 156.42 × 69.69
4. Step 4: Simplify right side
   113.35x = 10,900.91
5. Step 5: Solve for x
   x = 10,900.91/113.35
6. Step 6: Final answer
   x = 96.17