Finding the Fourth Proportional to 139,491.80, 209,035.76 and 96,170.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,491.80 : 209,035.76 = 96,170.27 : x
2. Step 2: Convert to fraction form
   139,491.80/209,035.76 = 96,170.27/x
3. Step 3: Cross multiply
   139,491.80x = 209,035.76 × 96,170.27
4. Step 4: Simplify right side
   139,491.80x = 20,103,025,478.86
5. Step 5: Solve for x
   x = 20,103,025,478.86/139,491.80
6. Step 6: Final answer
   x = 144,116.18