Finding the Fourth Proportional to 72,290.53, 99,760.24 and 40,459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,290.53 : 99,760.24 = 40,459.69 : x
2. Step 2: Convert to fraction form
   72,290.53/99,760.24 = 40,459.69/x
3. Step 3: Cross multiply
   72,290.53x = 99,760.24 × 40,459.69
4. Step 4: Simplify right side
   72,290.53x = 4,036,268,384.73
5. Step 5: Solve for x
   x = 4,036,268,384.73/72,290.53
6. Step 6: Final answer
   x = 55,833.99