Finding the Fourth Proportional to 72,140.04, 99,546.78 and 40,304.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,140.04 : 99,546.78 = 40,304.52 : x
2. Step 2: Convert to fraction form
   72,140.04/99,546.78 = 40,304.52/x
3. Step 3: Cross multiply
   72,140.04x = 99,546.78 × 40,304.52
4. Step 4: Simplify right side
   72,140.04x = 4,012,185,185.45
5. Step 5: Solve for x
   x = 4,012,185,185.45/72,140.04
6. Step 6: Final answer
   x = 55,616.62