Finding the Fourth Proportional to 72,758.12, 109,126.38 and 20,162.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,758.12 : 109,126.38 = 20,162.12 : x
2. Step 2: Convert to fraction form
   72,758.12/109,126.38 = 20,162.12/x
3. Step 3: Cross multiply
   72,758.12x = 109,126.38 × 20,162.12
4. Step 4: Simplify right side
   72,758.12x = 2,200,219,168.73
5. Step 5: Solve for x
   x = 2,200,219,168.73/72,758.12
6. Step 6: Final answer
   x = 30,240.19