Finding the Fourth Proportional to 103.52, 155.69 and 94.21

Step by Step Solution

1. Step 1: Write the proportion equation
   103.52 : 155.69 = 94.21 : x
2. Step 2: Convert to fraction form
   103.52/155.69 = 94.21/x
3. Step 3: Cross multiply
   103.52x = 155.69 × 94.21
4. Step 4: Simplify right side
   103.52x = 14,667.55
5. Step 5: Solve for x
   x = 14,667.55/103.52
6. Step 6: Final answer
   x = 141.69