Finding the Fourth Proportional to 139,153.52, 192,106.28 and 108,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,153.52 : 192,106.28 = 108,874.50 : x
2. Step 2: Convert to fraction form
   139,153.52/192,106.28 = 108,874.50/x
3. Step 3: Cross multiply
   139,153.52x = 192,106.28 × 108,874.50
4. Step 4: Simplify right side
   139,153.52x = 20,915,475,181.86
5. Step 5: Solve for x
   x = 20,915,475,181.86/139,153.52
6. Step 6: Final answer
   x = 150,305.04