Finding the Fourth Proportional to 48.51, 72.42 and 42.06

Step by Step Solution

1. Step 1: Write the proportion equation
   48.51 : 72.42 = 42.06 : x
2. Step 2: Convert to fraction form
   48.51/72.42 = 42.06/x
3. Step 3: Cross multiply
   48.51x = 72.42 × 42.06
4. Step 4: Simplify right side
   48.51x = 3,045.99
5. Step 5: Solve for x
   x = 3,045.99/48.51
6. Step 6: Final answer
   x = 62.79