Finding the Fourth Proportional to 72,067.56, 99,449.06 and 40,238.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,067.56 : 99,449.06 = 40,238.48 : x
2. Step 2: Convert to fraction form
   72,067.56/99,449.06 = 40,238.48/x
3. Step 3: Cross multiply
   72,067.56x = 99,449.06 × 40,238.48
4. Step 4: Simplify right side
   72,067.56x = 4,001,678,313.39
5. Step 5: Solve for x
   x = 4,001,678,313.39/72,067.56
6. Step 6: Final answer
   x = 55,526.76