Finding the Fourth Proportional to 67,936.56, 102,011.49 and 57,542.87

Step by Step Solution

1. Step 1: Write the proportion equation
   67,936.56 : 102,011.49 = 57,542.87 : x
2. Step 2: Convert to fraction form
   67,936.56/102,011.49 = 57,542.87/x
3. Step 3: Cross multiply
   67,936.56x = 102,011.49 × 57,542.87
4. Step 4: Simplify right side
   67,936.56x = 5,870,033,397.52
5. Step 5: Solve for x
   x = 5,870,033,397.52/67,936.56
6. Step 6: Final answer
   x = 86,404.63