Finding the Fourth Proportional to 72,754.74, 109,131.30 and 20,162.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,754.74 : 109,131.30 = 20,162.28 : x
2. Step 2: Convert to fraction form
   72,754.74/109,131.30 = 20,162.28/x
3. Step 3: Cross multiply
   72,754.74x = 109,131.30 × 20,162.28
4. Step 4: Simplify right side
   72,754.74x = 2,200,335,827.36
5. Step 5: Solve for x
   x = 2,200,335,827.36/72,754.74
6. Step 6: Final answer
   x = 30,243.20