Finding the Fourth Proportional to 139,127.56, 191,786.67 and 108,860.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,127.56 : 191,786.67 = 108,860.29 : x
2. Step 2: Convert to fraction form
   139,127.56/191,786.67 = 108,860.29/x
3. Step 3: Cross multiply
   139,127.56x = 191,786.67 × 108,860.29
4. Step 4: Simplify right side
   139,127.56x = 20,877,952,514.33
5. Step 5: Solve for x
   x = 20,877,952,514.33/139,127.56
6. Step 6: Final answer
   x = 150,063.38