Finding the Fourth Proportional to 641,796.72, 885,912.12 and 373,524.72

Step by Step Solution

1. Step 1: Write the proportion equation
   641,796.72 : 885,912.12 = 373,524.72 : x
2. Step 2: Convert to fraction form
   641,796.72/885,912.12 = 373,524.72/x
3. Step 3: Cross multiply
   641,796.72x = 885,912.12 × 373,524.72
4. Step 4: Simplify right side
   641,796.72x = 330,910,076,567.61
5. Step 5: Solve for x
   x = 330,910,076,567.61/641,796.72
6. Step 6: Final answer
   x = 515,599.51