Finding the Fourth Proportional to 139,028.24, 191,791.32 and 82,399.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,028.24 : 191,791.32 = 82,399.52 : x
2. Step 2: Convert to fraction form
   139,028.24/191,791.32 = 82,399.52/x
3. Step 3: Cross multiply
   139,028.24x = 191,791.32 × 82,399.52
4. Step 4: Simplify right side
   139,028.24x = 15,803,512,708.17
5. Step 5: Solve for x
   x = 15,803,512,708.17/139,028.24
6. Step 6: Final answer
   x = 113,671.24