Finding the Fourth Proportional to 67.87, 93.69 and 43.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67.87 : 93.69 = 43.31 : x
2. Step 2: Convert to fraction form
   67.87/93.69 = 43.31/x
3. Step 3: Cross multiply
   67.87x = 93.69 × 43.31
4. Step 4: Simplify right side
   67.87x = 4,057.71
5. Step 5: Solve for x
   x = 4,057.71/67.87
6. Step 6: Final answer
   x = 59.79