Finding the Fourth Proportional to 621,061.34, 857,008.10 and 359,371.41

Step by Step Solution

1. Step 1: Write the proportion equation
   621,061.34 : 857,008.10 = 359,371.41 : x
2. Step 2: Convert to fraction form
   621,061.34/857,008.10 = 359,371.41/x
3. Step 3: Cross multiply
   621,061.34x = 857,008.10 × 359,371.41
4. Step 4: Simplify right side
   621,061.34x = 307,984,210,565.72
5. Step 5: Solve for x
   x = 307,984,210,565.72/621,061.34
6. Step 6: Final answer
   x = 495,899.83