Finding the Fourth Proportional to 72,369.43, 99,873 and 40,103.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,369.43 : 99,873 = 40,103.96 : x
2. Step 2: Convert to fraction form
   72,369.43/99,873 = 40,103.96/x
3. Step 3: Cross multiply
   72,369.43x = 99,873 × 40,103.96
4. Step 4: Simplify right side
   72,369.43x = 4,005,302,797.08
5. Step 5: Solve for x
   x = 4,005,302,797.08/72,369.43
6. Step 6: Final answer
   x = 55,345.23