Finding the Fourth Proportional to 67,416.72, 101,124.60 and 52,638

Step by Step Solution

1. Step 1: Write the proportion equation
   67,416.72 : 101,124.60 = 52,638 : x
2. Step 2: Convert to fraction form
   67,416.72/101,124.60 = 52,638/x
3. Step 3: Cross multiply
   67,416.72x = 101,124.60 × 52,638
4. Step 4: Simplify right side
   67,416.72x = 5,322,996,694.80
5. Step 5: Solve for x
   x = 5,322,996,694.80/67,416.72
6. Step 6: Final answer
   x = 78,956.63