Finding the Fourth Proportional to 73,172.72, 109,759.18 and 20,582.24

Step by Step Solution

1. Step 1: Write the proportion equation
   73,172.72 : 109,759.18 = 20,582.24 : x
2. Step 2: Convert to fraction form
   73,172.72/109,759.18 = 20,582.24/x
3. Step 3: Cross multiply
   73,172.72x = 109,759.18 × 20,582.24
4. Step 4: Simplify right side
   73,172.72x = 2,259,089,784.96
5. Step 5: Solve for x
   x = 2,259,089,784.96/73,172.72
6. Step 6: Final answer
   x = 30,873.39