Finding the Fourth Proportional to 139,715.86, 192,981 and 101,414.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,715.86 : 192,981 = 101,414.20 : x
2. Step 2: Convert to fraction form
   139,715.86/192,981 = 101,414.20/x
3. Step 3: Cross multiply
   139,715.86x = 192,981 × 101,414.20
4. Step 4: Simplify right side
   139,715.86x = 19,571,013,730.20
5. Step 5: Solve for x
   x = 19,571,013,730.20/139,715.86
6. Step 6: Final answer
   x = 140,077.25