Finding the Fourth Proportional to 139,662.88, 209,496.27 and 39,823.11

Step by Step Solution

1. Step 1: Write the proportion equation
   139,662.88 : 209,496.27 = 39,823.11 : x
2. Step 2: Convert to fraction form
   139,662.88/209,496.27 = 39,823.11/x
3. Step 3: Cross multiply
   139,662.88x = 209,496.27 × 39,823.11
4. Step 4: Simplify right side
   139,662.88x = 8,342,793,939.75
5. Step 5: Solve for x
   x = 8,342,793,939.75/139,662.88
6. Step 6: Final answer
   x = 59,735.23