Finding the Fourth Proportional to 123,690.65, 185,561.21 and 39,448.49

Step by Step Solution

1. Step 1: Write the proportion equation
   123,690.65 : 185,561.21 = 39,448.49 : x
2. Step 2: Convert to fraction form
   123,690.65/185,561.21 = 39,448.49/x
3. Step 3: Cross multiply
   123,690.65x = 185,561.21 × 39,448.49
4. Step 4: Simplify right side
   123,690.65x = 7,320,108,707.89
5. Step 5: Solve for x
   x = 7,320,108,707.89/123,690.65
6. Step 6: Final answer
   x = 59,180.78