Finding the Fourth Proportional to 79,931.44, 119,976.18 and 42,491.62

Step by Step Solution

1. Step 1: Write the proportion equation
   79,931.44 : 119,976.18 = 42,491.62 : x
2. Step 2: Convert to fraction form
   79,931.44/119,976.18 = 42,491.62/x
3. Step 3: Cross multiply
   79,931.44x = 119,976.18 × 42,491.62
4. Step 4: Simplify right side
   79,931.44x = 5,097,982,249.61
5. Step 5: Solve for x
   x = 5,097,982,249.61/79,931.44
6. Step 6: Final answer
   x = 63,779.44