Finding the Fourth Proportional to 123,754.15, 185,601.46 and 57,130.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,754.15 : 185,601.46 = 57,130.31 : x
2. Step 2: Convert to fraction form
   123,754.15/185,601.46 = 57,130.31/x
3. Step 3: Cross multiply
   123,754.15x = 185,601.46 × 57,130.31
4. Step 4: Simplify right side
   123,754.15x = 10,603,468,946.25
5. Step 5: Solve for x
   x = 10,603,468,946.25/123,754.15
6. Step 6: Final answer
   x = 85,681.72