Finding the Fourth Proportional to 40,142.67, 60,251.37 and 20,435.98

Step by Step Solution

1. Step 1: Write the proportion equation
   40,142.67 : 60,251.37 = 20,435.98 : x
2. Step 2: Convert to fraction form
   40,142.67/60,251.37 = 20,435.98/x
3. Step 3: Cross multiply
   40,142.67x = 60,251.37 × 20,435.98
4. Step 4: Simplify right side
   40,142.67x = 1,231,295,792.29
5. Step 5: Solve for x
   x = 1,231,295,792.29/40,142.67
6. Step 6: Final answer
   x = 30,672.99