Finding the Fourth Proportional to 123,399.10, 185,069.49 and 53,240.14

Step by Step Solution

1. Step 1: Write the proportion equation
   123,399.10 : 185,069.49 = 53,240.14 : x
2. Step 2: Convert to fraction form
   123,399.10/185,069.49 = 53,240.14/x
3. Step 3: Cross multiply
   123,399.10x = 185,069.49 × 53,240.14
4. Step 4: Simplify right side
   123,399.10x = 9,853,125,557.33
5. Step 5: Solve for x
   x = 9,853,125,557.33/123,399.10
6. Step 6: Final answer
   x = 79,847.63