Finding the Fourth Proportional to 79,443.72, 119,165.52 and 20,279.40

Step by Step Solution

1. Step 1: Write the proportion equation
   79,443.72 : 119,165.52 = 20,279.40 : x
2. Step 2: Convert to fraction form
   79,443.72/119,165.52 = 20,279.40/x
3. Step 3: Cross multiply
   79,443.72x = 119,165.52 × 20,279.40
4. Step 4: Simplify right side
   79,443.72x = 2,416,605,246.29
5. Step 5: Solve for x
   x = 2,416,605,246.29/79,443.72
6. Step 6: Final answer
   x = 30,419.08