Finding the Fourth Proportional to 404,796.52, 607,204.52 and 138,555.28

Step by Step Solution

1. Step 1: Write the proportion equation
   404,796.52 : 607,204.52 = 138,555.28 : x
2. Step 2: Convert to fraction form
   404,796.52/607,204.52 = 138,555.28/x
3. Step 3: Cross multiply
   404,796.52x = 607,204.52 × 138,555.28
4. Step 4: Simplify right side
   404,796.52x = 84,131,392,285.87
5. Step 5: Solve for x
   x = 84,131,392,285.87/404,796.52
6. Step 6: Final answer
   x = 207,836.25