Finding the Fourth Proportional to 139,644.04, 209,472.52 and 39,811

Step by Step Solution

1. Step 1: Write the proportion equation
   139,644.04 : 209,472.52 = 39,811 : x
2. Step 2: Convert to fraction form
   139,644.04/209,472.52 = 39,811/x
3. Step 3: Cross multiply
   139,644.04x = 209,472.52 × 39,811
4. Step 4: Simplify right side
   139,644.04x = 8,339,310,493.72
5. Step 5: Solve for x
   x = 8,339,310,493.72/139,644.04
6. Step 6: Final answer
   x = 59,718.34