Finding the Fourth Proportional to 389,455.83, 584,205.01 and 123,196.55

Step by Step Solution

1. Step 1: Write the proportion equation
   389,455.83 : 584,205.01 = 123,196.55 : x
2. Step 2: Convert to fraction form
   389,455.83/584,205.01 = 123,196.55/x
3. Step 3: Cross multiply
   389,455.83x = 584,205.01 × 123,196.55
4. Step 4: Simplify right side
   389,455.83x = 71,972,038,495.70
5. Step 5: Solve for x
   x = 71,972,038,495.70/389,455.83
6. Step 6: Final answer
   x = 184,801.54