Finding the Fourth Proportional to 79,871.39, 119,705.32 and 42,449.39

Step by Step Solution

1. Step 1: Write the proportion equation
   79,871.39 : 119,705.32 = 42,449.39 : x
2. Step 2: Convert to fraction form
   79,871.39/119,705.32 = 42,449.39/x
3. Step 3: Cross multiply
   79,871.39x = 119,705.32 × 42,449.39
4. Step 4: Simplify right side
   79,871.39x = 5,081,417,813.75
5. Step 5: Solve for x
   x = 5,081,417,813.75/79,871.39
6. Step 6: Final answer
   x = 63,620.00