Finding the Fourth Proportional to 389,359.98, 584,036.46 and 123,120.81

Step by Step Solution

1. Step 1: Write the proportion equation
   389,359.98 : 584,036.46 = 123,120.81 : x
2. Step 2: Convert to fraction form
   389,359.98/584,036.46 = 123,120.81/x
3. Step 3: Cross multiply
   389,359.98x = 584,036.46 × 123,120.81
4. Step 4: Simplify right side
   389,359.98x = 71,907,042,024.73
5. Step 5: Solve for x
   x = 71,907,042,024.73/389,359.98
6. Step 6: Final answer
   x = 184,680.11