Finding the Fourth Proportional to 389,395, 584,196.18 and 123,160.36

Step by Step Solution

1. Step 1: Write the proportion equation
   389,395 : 584,196.18 = 123,160.36 : x
2. Step 2: Convert to fraction form
   389,395/584,196.18 = 123,160.36/x
3. Step 3: Cross multiply
   389,395x = 584,196.18 × 123,160.36
4. Step 4: Simplify right side
   389,395x = 71,949,811,839.42
5. Step 5: Solve for x
   x = 71,949,811,839.42/389,395
6. Step 6: Final answer
   x = 184,773.33