Finding the Fourth Proportional to 139,127.31, 191,786.33 and 108,860.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,127.31 : 191,786.33 = 108,860.04 : x
2. Step 2: Convert to fraction form
   139,127.31/191,786.33 = 108,860.04/x
3. Step 3: Cross multiply
   139,127.31x = 191,786.33 × 108,860.04
4. Step 4: Simplify right side
   139,127.31x = 20,877,867,827.40
5. Step 5: Solve for x
   x = 20,877,867,827.40/139,127.31
6. Step 6: Final answer
   x = 150,063.05