Finding the Fourth Proportional to 79,788.20, 119,717.56 and 42,339.14

Step by Step Solution

1. Step 1: Write the proportion equation
   79,788.20 : 119,717.56 = 42,339.14 : x
2. Step 2: Convert to fraction form
   79,788.20/119,717.56 = 42,339.14/x
3. Step 3: Cross multiply
   79,788.20x = 119,717.56 × 42,339.14
4. Step 4: Simplify right side
   79,788.20x = 5,068,738,533.30
5. Step 5: Solve for x
   x = 5,068,738,533.30/79,788.20
6. Step 6: Final answer
   x = 63,527.42