Finding the Fourth Proportional to 40,686.82, 60,861.72 and 38,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,686.82 : 60,861.72 = 38,198.50 : x
2. Step 2: Convert to fraction form
   40,686.82/60,861.72 = 38,198.50/x
3. Step 3: Cross multiply
   40,686.82x = 60,861.72 × 38,198.50
4. Step 4: Simplify right side
   40,686.82x = 2,324,826,411.42
5. Step 5: Solve for x
   x = 2,324,826,411.42/40,686.82
6. Step 6: Final answer
   x = 57,139.55