Finding the Fourth Proportional to 86,723.96, 130,083.91 and 39,976.83

Step by Step Solution

1. Step 1: Write the proportion equation
   86,723.96 : 130,083.91 = 39,976.83 : x
2. Step 2: Convert to fraction form
   86,723.96/130,083.91 = 39,976.83/x
3. Step 3: Cross multiply
   86,723.96x = 130,083.91 × 39,976.83
4. Step 4: Simplify right side
   86,723.96x = 5,200,342,255.86
5. Step 5: Solve for x
   x = 5,200,342,255.86/86,723.96
6. Step 6: Final answer
   x = 59,964.31