Finding the Fourth Proportional to 155.52, 214.72 and 106.52

Step by Step Solution

1. Step 1: Write the proportion equation
   155.52 : 214.72 = 106.52 : x
2. Step 2: Convert to fraction form
   155.52/214.72 = 106.52/x
3. Step 3: Cross multiply
   155.52x = 214.72 × 106.52
4. Step 4: Simplify right side
   155.52x = 22,870.63
5. Step 5: Solve for x
   x = 22,870.63/155.52
6. Step 6: Final answer
   x = 147.06