Finding the Fourth Proportional to 79,870.39, 119,703.83 and 42,448.39

Step by Step Solution

1. Step 1: Write the proportion equation
   79,870.39 : 119,703.83 = 42,448.39 : x
2. Step 2: Convert to fraction form
   79,870.39/119,703.83 = 42,448.39/x
3. Step 3: Cross multiply
   79,870.39x = 119,703.83 × 42,448.39
4. Step 4: Simplify right side
   79,870.39x = 5,081,234,348.83
5. Step 5: Solve for x
   x = 5,081,234,348.83/79,870.39
6. Step 6: Final answer
   x = 63,618.50