Finding the Fourth Proportional to 139,112.79, 208,964.24 and 131,014.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,112.79 : 208,964.24 = 131,014.41 : x
2. Step 2: Convert to fraction form
   139,112.79/208,964.24 = 131,014.41/x
3. Step 3: Cross multiply
   139,112.79x = 208,964.24 × 131,014.41
4. Step 4: Simplify right side
   139,112.79x = 27,377,325,959.63
5. Step 5: Solve for x
   x = 27,377,325,959.63/139,112.79
6. Step 6: Final answer
   x = 196,799.49