Finding the Fourth Proportional to 67,942.87, 101,456.77 and 55,487.61

Step by Step Solution

1. Step 1: Write the proportion equation
   67,942.87 : 101,456.77 = 55,487.61 : x
2. Step 2: Convert to fraction form
   67,942.87/101,456.77 = 55,487.61/x
3. Step 3: Cross multiply
   67,942.87x = 101,456.77 × 55,487.61
4. Step 4: Simplify right side
   67,942.87x = 5,629,593,685.62
5. Step 5: Solve for x
   x = 5,629,593,685.62/67,942.87
6. Step 6: Final answer
   x = 82,857.76