Finding the Fourth Proportional to 103.55, 155.33 and 48.69

Step by Step Solution

1. Step 1: Write the proportion equation
   103.55 : 155.33 = 48.69 : x
2. Step 2: Convert to fraction form
   103.55/155.33 = 48.69/x
3. Step 3: Cross multiply
   103.55x = 155.33 × 48.69
4. Step 4: Simplify right side
   103.55x = 7,562.77
5. Step 5: Solve for x
   x = 7,562.77/103.55
6. Step 6: Final answer
   x = 73.04