Finding the Fourth Proportional to 72,797.12, 109,196.29 and 20,210.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,797.12 : 109,196.29 = 20,210.70 : x
2. Step 2: Convert to fraction form
   72,797.12/109,196.29 = 20,210.70/x
3. Step 3: Cross multiply
   72,797.12x = 109,196.29 × 20,210.70
4. Step 4: Simplify right side
   72,797.12x = 2,206,933,680.77
5. Step 5: Solve for x
   x = 2,206,933,680.77/72,797.12
6. Step 6: Final answer
   x = 30,316.22