Finding the Fourth Proportional to 72,709.27, 109,066.33 and 20,114.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72,709.27 : 109,066.33 = 20,114.35 : x
2. Step 2: Convert to fraction form
   72,709.27/109,066.33 = 20,114.35/x
3. Step 3: Cross multiply
   72,709.27x = 109,066.33 × 20,114.35
4. Step 4: Simplify right side
   72,709.27x = 2,193,797,688.93
5. Step 5: Solve for x
   x = 2,193,797,688.93/72,709.27
6. Step 6: Final answer
   x = 30,172.19