Finding the Fourth Proportional to 139,414.26, 209,003.78 and 60,469.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,414.26 : 209,003.78 = 60,469.02 : x
2. Step 2: Convert to fraction form
   139,414.26/209,003.78 = 60,469.02/x
3. Step 3: Cross multiply
   139,414.26x = 209,003.78 × 60,469.02
4. Step 4: Simplify right side
   139,414.26x = 12,638,253,752.90
5. Step 5: Solve for x
   x = 12,638,253,752.90/139,414.26
6. Step 6: Final answer
   x = 90,652.52