Finding the Fourth Proportional to 123,762.93, 185,614.68 and 57,139.05

Step by Step Solution

1. Step 1: Write the proportion equation
   123,762.93 : 185,614.68 = 57,139.05 : x
2. Step 2: Convert to fraction form
   123,762.93/185,614.68 = 57,139.05/x
3. Step 3: Cross multiply
   123,762.93x = 185,614.68 × 57,139.05
4. Step 4: Simplify right side
   123,762.93x = 10,605,846,481.25
5. Step 5: Solve for x
   x = 10,605,846,481.25/123,762.93
6. Step 6: Final answer
   x = 85,694.86