Finding the Fourth Proportional to 59.05, 88.71 and 53.92

Step by Step Solution

1. Step 1: Write the proportion equation
   59.05 : 88.71 = 53.92 : x
2. Step 2: Convert to fraction form
   59.05/88.71 = 53.92/x
3. Step 3: Cross multiply
   59.05x = 88.71 × 53.92
4. Step 4: Simplify right side
   59.05x = 4,783.24
5. Step 5: Solve for x
   x = 4,783.24/59.05
6. Step 6: Final answer
   x = 81.00