Finding the Fourth Proportional to 123,760.82, 185,611.49 and 57,136.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,760.82 : 185,611.49 = 57,136.94 : x
2. Step 2: Convert to fraction form
   123,760.82/185,611.49 = 57,136.94/x
3. Step 3: Cross multiply
   123,760.82x = 185,611.49 × 57,136.94
4. Step 4: Simplify right side
   123,760.82x = 10,605,271,353.70
5. Step 5: Solve for x
   x = 10,605,271,353.70/123,760.82
6. Step 6: Final answer
   x = 85,691.67