Finding the Fourth Proportional to 71,467.35, 98,631 and 39,646.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,467.35 : 98,631 = 39,646.50 : x
2. Step 2: Convert to fraction form
   71,467.35/98,631 = 39,646.50/x
3. Step 3: Cross multiply
   71,467.35x = 98,631 × 39,646.50
4. Step 4: Simplify right side
   71,467.35x = 3,910,373,941.50
5. Step 5: Solve for x
   x = 3,910,373,941.50/71,467.35
6. Step 6: Final answer
   x = 54,715.53