Finding the Fourth Proportional to 425,151.76, 637,817.59 and 140,826.21

Step by Step Solution

1. Step 1: Write the proportion equation
   425,151.76 : 637,817.59 = 140,826.21 : x
2. Step 2: Convert to fraction form
   425,151.76/637,817.59 = 140,826.21/x
3. Step 3: Cross multiply
   425,151.76x = 637,817.59 × 140,826.21
4. Step 4: Simplify right side
   425,151.76x = 89,821,433,871.03
5. Step 5: Solve for x
   x = 89,821,433,871.03/425,151.76
6. Step 6: Final answer
   x = 211,269.11