Finding the Fourth Proportional to 72,238.74, 99,684.04 and 40,401.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,238.74 : 99,684.04 = 40,401.48 : x
2. Step 2: Convert to fraction form
   72,238.74/99,684.04 = 40,401.48/x
3. Step 3: Cross multiply
   72,238.74x = 99,684.04 × 40,401.48
4. Step 4: Simplify right side
   72,238.74x = 4,027,382,748.38
5. Step 5: Solve for x
   x = 4,027,382,748.38/72,238.74
6. Step 6: Final answer
   x = 55,751.01