Finding the Fourth Proportional to 404,387.81, 606,559.83 and 123,905.87

Step by Step Solution

1. Step 1: Write the proportion equation
   404,387.81 : 606,559.83 = 123,905.87 : x
2. Step 2: Convert to fraction form
   404,387.81/606,559.83 = 123,905.87/x
3. Step 3: Cross multiply
   404,387.81x = 606,559.83 × 123,905.87
4. Step 4: Simplify right side
   404,387.81x = 75,156,323,443.20
5. Step 5: Solve for x
   x = 75,156,323,443.20/404,387.81
6. Step 6: Final answer
   x = 185,852.10