Finding the Fourth Proportional to 63,238.56, 87,309.89 and 40,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   63,238.56 : 87,309.89 = 40,587.31 : x
2. Step 2: Convert to fraction form
   63,238.56/87,309.89 = 40,587.31/x
3. Step 3: Cross multiply
   63,238.56x = 87,309.89 × 40,587.31
4. Step 4: Simplify right side
   63,238.56x = 3,543,673,571.50
5. Step 5: Solve for x
   x = 3,543,673,571.50/63,238.56
6. Step 6: Final answer
   x = 56,036.59