Finding the Fourth Proportional to 111.43, 153.73 and 69.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111.43 : 153.73 = 69.39 : x
2. Step 2: Convert to fraction form
   111.43/153.73 = 69.39/x
3. Step 3: Cross multiply
   111.43x = 153.73 × 69.39
4. Step 4: Simplify right side
   111.43x = 10,667.32
5. Step 5: Solve for x
   x = 10,667.32/111.43
6. Step 6: Final answer
   x = 95.73