Finding the Fourth Proportional to 389,995.72, 585,081.06 and 123,764.92

Step by Step Solution

1. Step 1: Write the proportion equation
   389,995.72 : 585,081.06 = 123,764.92 : x
2. Step 2: Convert to fraction form
   389,995.72/585,081.06 = 123,764.92/x
3. Step 3: Cross multiply
   389,995.72x = 585,081.06 × 123,764.92
4. Step 4: Simplify right side
   389,995.72x = 72,412,510,584.42
5. Step 5: Solve for x
   x = 72,412,510,584.42/389,995.72
6. Step 6: Final answer
   x = 185,675.14