Finding the Fourth Proportional to 404,390.92, 606,564.50 and 123,908.98

Step by Step Solution

1. Step 1: Write the proportion equation
   404,390.92 : 606,564.50 = 123,908.98 : x
2. Step 2: Convert to fraction form
   404,390.92/606,564.50 = 123,908.98/x
3. Step 3: Cross multiply
   404,390.92x = 606,564.50 × 123,908.98
4. Step 4: Simplify right side
   404,390.92x = 75,158,788,499.21
5. Step 5: Solve for x
   x = 75,158,788,499.21/404,390.92
6. Step 6: Final answer
   x = 185,856.77