Finding the Fourth Proportional to 63,769.92, 87,978.72 and 39,887.52

Step by Step Solution

1. Step 1: Write the proportion equation
   63,769.92 : 87,978.72 = 39,887.52 : x
2. Step 2: Convert to fraction form
   63,769.92/87,978.72 = 39,887.52/x
3. Step 3: Cross multiply
   63,769.92x = 87,978.72 × 39,887.52
4. Step 4: Simplify right side
   63,769.92x = 3,509,252,953.57
5. Step 5: Solve for x
   x = 3,509,252,953.57/63,769.92
6. Step 6: Final answer
   x = 55,029.91