Finding the Fourth Proportional to 389,380.50, 584,066.86 and 123,141.06

Step by Step Solution

1. Step 1: Write the proportion equation
   389,380.50 : 584,066.86 = 123,141.06 : x
2. Step 2: Convert to fraction form
   389,380.50/584,066.86 = 123,141.06/x
3. Step 3: Cross multiply
   389,380.50x = 584,066.86 × 123,141.06
4. Step 4: Simplify right side
   389,380.50x = 71,922,613,711.44
5. Step 5: Solve for x
   x = 71,922,613,711.44/389,380.50
6. Step 6: Final answer
   x = 184,710.36