Finding the Fourth Proportional to 67,400.22, 101,099.85 and 52,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,400.22 : 101,099.85 = 52,621.50 : x
2. Step 2: Convert to fraction form
   67,400.22/101,099.85 = 52,621.50/x
3. Step 3: Cross multiply
   67,400.22x = 101,099.85 × 52,621.50
4. Step 4: Simplify right side
   67,400.22x = 5,320,025,756.78
5. Step 5: Solve for x
   x = 5,320,025,756.78/67,400.22
6. Step 6: Final answer
   x = 78,931.88