Finding the Fourth Proportional to 51.02, 70.42 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   51.02 : 70.42 = 42.82 : x
2. Step 2: Convert to fraction form
   51.02/70.42 = 42.82/x
3. Step 3: Cross multiply
   51.02x = 70.42 × 42.82
4. Step 4: Simplify right side
   51.02x = 3,015.38
5. Step 5: Solve for x
   x = 3,015.38/51.02
6. Step 6: Final answer
   x = 59.10