Finding the Fourth Proportional to 39,876.84, 59,870.61 and 20,169.27

Step by Step Solution

1. Step 1: Write the proportion equation
   39,876.84 : 59,870.61 = 20,169.27 : x
2. Step 2: Convert to fraction form
   39,876.84/59,870.61 = 20,169.27/x
3. Step 3: Cross multiply
   39,876.84x = 59,870.61 × 20,169.27
4. Step 4: Simplify right side
   39,876.84x = 1,207,546,498.15
5. Step 5: Solve for x
   x = 1,207,546,498.15/39,876.84
6. Step 6: Final answer
   x = 30,281.90