Finding the Fourth Proportional to 415,308.52, 623,498.46 and 356,521.96

Step by Step Solution

1. Step 1: Write the proportion equation
   415,308.52 : 623,498.46 = 356,521.96 : x
2. Step 2: Convert to fraction form
   415,308.52/623,498.46 = 356,521.96/x
3. Step 3: Cross multiply
   415,308.52x = 623,498.46 × 356,521.96
4. Step 4: Simplify right side
   415,308.52x = 222,290,893,016.18
5. Step 5: Solve for x
   x = 222,290,893,016.18/415,308.52
6. Step 6: Final answer
   x = 535,242.79