Finding the Fourth Proportional to 139,600.56, 192,585.24 and 82,979.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,600.56 : 192,585.24 = 82,979.76 : x
2. Step 2: Convert to fraction form
   139,600.56/192,585.24 = 82,979.76/x
3. Step 3: Cross multiply
   139,600.56x = 192,585.24 × 82,979.76
4. Step 4: Simplify right side
   139,600.56x = 15,980,676,994.74
5. Step 5: Solve for x
   x = 15,980,676,994.74/139,600.56
6. Step 6: Final answer
   x = 114,474.30