Finding the Fourth Proportional to 79,789.64, 119,582.70 and 42,367.64

Step by Step Solution

1. Step 1: Write the proportion equation
   79,789.64 : 119,582.70 = 42,367.64 : x
2. Step 2: Convert to fraction form
   79,789.64/119,582.70 = 42,367.64/x
3. Step 3: Cross multiply
   79,789.64x = 119,582.70 × 42,367.64
4. Step 4: Simplify right side
   79,789.64x = 5,066,436,783.83
5. Step 5: Solve for x
   x = 5,066,436,783.83/79,789.64
6. Step 6: Final answer
   x = 63,497.43