Finding the Fourth Proportional to 72,067.25, 99,485.97 and 54,168.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72,067.25 : 99,485.97 = 54,168.03 : x
2. Step 2: Convert to fraction form
   72,067.25/99,485.97 = 54,168.03/x
3. Step 3: Cross multiply
   72,067.25x = 99,485.97 × 54,168.03
4. Step 4: Simplify right side
   72,067.25x = 5,388,959,007.54
5. Step 5: Solve for x
   x = 5,388,959,007.54/72,067.25
6. Step 6: Final answer
   x = 74,776.81