Finding the Fourth Proportional to 72,429.57, 99,959.04 and 40,604.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.57 : 99,959.04 = 40,604.58 : x
2. Step 2: Convert to fraction form
   72,429.57/99,959.04 = 40,604.58/x
3. Step 3: Cross multiply
   72,429.57x = 99,959.04 × 40,604.58
4. Step 4: Simplify right side
   72,429.57x = 4,058,794,836.40
5. Step 5: Solve for x
   x = 4,058,794,836.40/72,429.57
6. Step 6: Final answer
   x = 56,037.81