Finding the Fourth Proportional to 74,168.96, 111,277.20 and 21,581.60

Step by Step Solution

1. Step 1: Write the proportion equation
   74,168.96 : 111,277.20 = 21,581.60 : x
2. Step 2: Convert to fraction form
   74,168.96/111,277.20 = 21,581.60/x
3. Step 3: Cross multiply
   74,168.96x = 111,277.20 × 21,581.60
4. Step 4: Simplify right side
   74,168.96x = 2,401,540,019.52
5. Step 5: Solve for x
   x = 2,401,540,019.52/74,168.96
6. Step 6: Final answer
   x = 32,379.31