Finding the Fourth Proportional to 71.93, 99.25 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   71.93 : 99.25 = 42.82 : x
2. Step 2: Convert to fraction form
   71.93/99.25 = 42.82/x
3. Step 3: Cross multiply
   71.93x = 99.25 × 42.82
4. Step 4: Simplify right side
   71.93x = 4,249.89
5. Step 5: Solve for x
   x = 4,249.89/71.93
6. Step 6: Final answer
   x = 59.08