Finding the Fourth Proportional to 152.78, 212.24 and 151.30

Step by Step Solution

1. Step 1: Write the proportion equation
   152.78 : 212.24 = 151.30 : x
2. Step 2: Convert to fraction form
   152.78/212.24 = 151.30/x
3. Step 3: Cross multiply
   152.78x = 212.24 × 151.30
4. Step 4: Simplify right side
   152.78x = 32,111.91
5. Step 5: Solve for x
   x = 32,111.91/152.78
6. Step 6: Final answer
   x = 210.18