Finding the Fourth Proportional to 59.31, 81.82 and 47.05

Step by Step Solution

1. Step 1: Write the proportion equation
   59.31 : 81.82 = 47.05 : x
2. Step 2: Convert to fraction form
   59.31/81.82 = 47.05/x
3. Step 3: Cross multiply
   59.31x = 81.82 × 47.05
4. Step 4: Simplify right side
   59.31x = 3,849.49
5. Step 5: Solve for x
   x = 3,849.49/59.31
6. Step 6: Final answer
   x = 64.90