Finding the Fourth Proportional to 139,821.72, 193,067.90 and 113,984.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,821.72 : 193,067.90 = 113,984.43 : x
2. Step 2: Convert to fraction form
   139,821.72/193,067.90 = 113,984.43/x
3. Step 3: Cross multiply
   139,821.72x = 193,067.90 × 113,984.43
4. Step 4: Simplify right side
   139,821.72x = 22,006,734,532.80
5. Step 5: Solve for x
   x = 22,006,734,532.80/139,821.72
6. Step 6: Final answer
   x = 157,391.39