Finding the Fourth Proportional to 710,180.82, 979,919.42 and 404,239.37

Step by Step Solution

1. Step 1: Write the proportion equation
   710,180.82 : 979,919.42 = 404,239.37 : x
2. Step 2: Convert to fraction form
   710,180.82/979,919.42 = 404,239.37/x
3. Step 3: Cross multiply
   710,180.82x = 979,919.42 × 404,239.37
4. Step 4: Simplify right side
   710,180.82x = 396,122,002,070.77
5. Step 5: Solve for x
   x = 396,122,002,070.77/710,180.82
6. Step 6: Final answer
   x = 557,776.26