Finding the Fourth Proportional to 79,815.92, 119,758.68 and 42,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,815.92 : 119,758.68 = 42,836.72 : x
2. Step 2: Convert to fraction form
   79,815.92/119,758.68 = 42,836.72/x
3. Step 3: Cross multiply
   79,815.92x = 119,758.68 × 42,836.72
4. Step 4: Simplify right side
   79,815.92x = 5,130,069,042.73
5. Step 5: Solve for x
   x = 5,130,069,042.73/79,815.92
6. Step 6: Final answer
   x = 64,273.76