Finding the Fourth Proportional to 139,596.47, 209,418.06 and 109,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,596.47 : 209,418.06 = 109,609.50 : x
2. Step 2: Convert to fraction form
   139,596.47/209,418.06 = 109,609.50/x
3. Step 3: Cross multiply
   139,596.47x = 209,418.06 × 109,609.50
4. Step 4: Simplify right side
   139,596.47x = 22,954,208,847.57
5. Step 5: Solve for x
   x = 22,954,208,847.57/139,596.47
6. Step 6: Final answer
   x = 164,432.59