Finding the Fourth Proportional to 139,229.32, 191,991.18 and 82,629.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,229.32 : 191,991.18 = 82,629.76 : x
2. Step 2: Convert to fraction form
   139,229.32/191,991.18 = 82,629.76/x
3. Step 3: Cross multiply
   139,229.32x = 191,991.18 × 82,629.76
4. Step 4: Simplify right side
   139,229.32x = 15,864,185,125.52
5. Step 5: Solve for x
   x = 15,864,185,125.52/139,229.32
6. Step 6: Final answer
   x = 113,942.85