Finding the Fourth Proportional to 59.31, 81.86 and 50.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59.31 : 81.86 = 50.18 : x
2. Step 2: Convert to fraction form
   59.31/81.86 = 50.18/x
3. Step 3: Cross multiply
   59.31x = 81.86 × 50.18
4. Step 4: Simplify right side
   59.31x = 4,107.07
5. Step 5: Solve for x
   x = 4,107.07/59.31
6. Step 6: Final answer
   x = 69.25