Finding the Fourth Proportional to 63,861.78, 87,491.06 and 61,467.48

Step by Step Solution

1. Step 1: Write the proportion equation
   63,861.78 : 87,491.06 = 61,467.48 : x
2. Step 2: Convert to fraction form
   63,861.78/87,491.06 = 61,467.48/x
3. Step 3: Cross multiply
   63,861.78x = 87,491.06 × 61,467.48
4. Step 4: Simplify right side
   63,861.78x = 5,377,854,673.39
5. Step 5: Solve for x
   x = 5,377,854,673.39/63,861.78
6. Step 6: Final answer
   x = 84,210.85