Finding the Fourth Proportional to 72,067.39, 99,453.18 and 40,237.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,067.39 : 99,453.18 = 40,237.43 : x
2. Step 2: Convert to fraction form
   72,067.39/99,453.18 = 40,237.43/x
3. Step 3: Cross multiply
   72,067.39x = 99,453.18 × 40,237.43
4. Step 4: Simplify right side
   72,067.39x = 4,001,740,022.15
5. Step 5: Solve for x
   x = 4,001,740,022.15/72,067.39
6. Step 6: Final answer
   x = 55,527.75