Finding the Fourth Proportional to 389,698.88, 584,565.35 and 123,479.01

Step by Step Solution

1. Step 1: Write the proportion equation
   389,698.88 : 584,565.35 = 123,479.01 : x
2. Step 2: Convert to fraction form
   389,698.88/584,565.35 = 123,479.01/x
3. Step 3: Cross multiply
   389,698.88x = 584,565.35 × 123,479.01
4. Step 4: Simplify right side
   389,698.88x = 72,181,550,080.91
5. Step 5: Solve for x
   x = 72,181,550,080.91/389,698.88
6. Step 6: Final answer
   x = 185,223.91