Finding the Fourth Proportional to 40,072.88, 55,311.72 and 23,309.12

Step by Step Solution

1. Step 1: Write the proportion equation
   40,072.88 : 55,311.72 = 23,309.12 : x
2. Step 2: Convert to fraction form
   40,072.88/55,311.72 = 23,309.12/x
3. Step 3: Cross multiply
   40,072.88x = 55,311.72 × 23,309.12
4. Step 4: Simplify right side
   40,072.88x = 1,289,267,518.89
5. Step 5: Solve for x
   x = 1,289,267,518.89/40,072.88
6. Step 6: Final answer
   x = 32,173.07