Finding the Fourth Proportional to 139,414.57, 209,004.30 and 60,469.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,414.57 : 209,004.30 = 60,469.34 : x
2. Step 2: Convert to fraction form
   139,414.57/209,004.30 = 60,469.34/x
3. Step 3: Cross multiply
   139,414.57x = 209,004.30 × 60,469.34
4. Step 4: Simplify right side
   139,414.57x = 12,638,352,078.16
5. Step 5: Solve for x
   x = 12,638,352,078.16/139,414.57
6. Step 6: Final answer
   x = 90,653.02