Finding the Fourth Proportional to 59.22, 81.70 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   59.22 : 81.70 = 42.82 : x
2. Step 2: Convert to fraction form
   59.22/81.70 = 42.82/x
3. Step 3: Cross multiply
   59.22x = 81.70 × 42.82
4. Step 4: Simplify right side
   59.22x = 3,498.39
5. Step 5: Solve for x
   x = 3,498.39/59.22
6. Step 6: Final answer
   x = 59.07