Finding the Fourth Proportional to 72,722.66, 109,084.14 and 20,132.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,722.66 : 109,084.14 = 20,132.30 : x
2. Step 2: Convert to fraction form
   72,722.66/109,084.14 = 20,132.30/x
3. Step 3: Cross multiply
   72,722.66x = 109,084.14 × 20,132.30
4. Step 4: Simplify right side
   72,722.66x = 2,196,114,631.72
5. Step 5: Solve for x
   x = 2,196,114,631.72/72,722.66
6. Step 6: Final answer
   x = 30,198.49