Finding the Fourth Proportional to 404,388.81, 606,561.33 and 123,906.87

Step by Step Solution

1. Step 1: Write the proportion equation
   404,388.81 : 606,561.33 = 123,906.87 : x
2. Step 2: Convert to fraction form
   404,388.81/606,561.33 = 123,906.87/x
3. Step 3: Cross multiply
   404,388.81x = 606,561.33 × 123,906.87
4. Step 4: Simplify right side
   404,388.81x = 75,157,115,863.34
5. Step 5: Solve for x
   x = 75,157,115,863.34/404,388.81
6. Step 6: Final answer
   x = 185,853.60