Finding the Fourth Proportional to 139,112.28, 191,765.63 and 108,845.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,112.28 : 191,765.63 = 108,845.04 : x
2. Step 2: Convert to fraction form
   139,112.28/191,765.63 = 108,845.04/x
3. Step 3: Cross multiply
   139,112.28x = 191,765.63 × 108,845.04
4. Step 4: Simplify right side
   139,112.28x = 20,872,737,940.09
5. Step 5: Solve for x
   x = 20,872,737,940.09/139,112.28
6. Step 6: Final answer
   x = 150,042.38