Finding the Fourth Proportional to 551,940.83, 828,003.43 and 172,786.10

Step by Step Solution

1. Step 1: Write the proportion equation
   551,940.83 : 828,003.43 = 172,786.10 : x
2. Step 2: Convert to fraction form
   551,940.83/828,003.43 = 172,786.10/x
3. Step 3: Cross multiply
   551,940.83x = 828,003.43 × 172,786.10
4. Step 4: Simplify right side
   551,940.83x = 143,067,485,094.37
5. Step 5: Solve for x
   x = 143,067,485,094.37/551,940.83
6. Step 6: Final answer
   x = 259,208.01