Finding the Fourth Proportional to 641,951.82, 885,893.31 and 355,471.83

Step by Step Solution

1. Step 1: Write the proportion equation
   641,951.82 : 885,893.31 = 355,471.83 : x
2. Step 2: Convert to fraction form
   641,951.82/885,893.31 = 355,471.83/x
3. Step 3: Cross multiply
   641,951.82x = 885,893.31 × 355,471.83
4. Step 4: Simplify right side
   641,951.82x = 314,910,116,090.46
5. Step 5: Solve for x
   x = 314,910,116,090.46/641,951.82
6. Step 6: Final answer
   x = 490,551.01