Finding the Fourth Proportional to 72,104.48, 99,511.23 and 40,275.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,104.48 : 99,511.23 = 40,275.43 : x
2. Step 2: Convert to fraction form
   72,104.48/99,511.23 = 40,275.43/x
3. Step 3: Cross multiply
   72,104.48x = 99,511.23 × 40,275.43
4. Step 4: Simplify right side
   72,104.48x = 4,007,857,480.33
5. Step 5: Solve for x
   x = 4,007,857,480.33/72,104.48
6. Step 6: Final answer
   x = 55,584.03