Finding the Fourth Proportional to 57,879, 86,818.42 and 38,013.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,879 : 86,818.42 = 38,013.88 : x
2. Step 2: Convert to fraction form
   57,879/86,818.42 = 38,013.88/x
3. Step 3: Cross multiply
   57,879x = 86,818.42 × 38,013.88
4. Step 4: Simplify right side
   57,879x = 3,300,304,999.67
5. Step 5: Solve for x
   x = 3,300,304,999.67/57,879
6. Step 6: Final answer
   x = 57,020.77