Finding the Fourth Proportional to 72,709.41, 109,066.55 and 20,114.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,709.41 : 109,066.55 = 20,114.49 : x
2. Step 2: Convert to fraction form
   72,709.41/109,066.55 = 20,114.49/x
3. Step 3: Cross multiply
   72,709.41x = 109,066.55 × 20,114.49
4. Step 4: Simplify right side
   72,709.41x = 2,193,817,979.02
5. Step 5: Solve for x
   x = 2,193,817,979.02/72,709.41
6. Step 6: Final answer
   x = 30,172.41