Finding the Fourth Proportional to 389,834.05, 584,771.79 and 123,615.55

Step by Step Solution

1. Step 1: Write the proportion equation
   389,834.05 : 584,771.79 = 123,615.55 : x
2. Step 2: Convert to fraction form
   389,834.05/584,771.79 = 123,615.55/x
3. Step 3: Cross multiply
   389,834.05x = 584,771.79 × 123,615.55
4. Step 4: Simplify right side
   389,834.05x = 72,286,886,445.33
5. Step 5: Solve for x
   x = 72,286,886,445.33/389,834.05
6. Step 6: Final answer
   x = 185,429.89