Finding the Fourth Proportional to 139,736.71, 192,861.80 and 82,372.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,736.71 : 192,861.80 = 82,372.61 : x
2. Step 2: Convert to fraction form
   139,736.71/192,861.80 = 82,372.61/x
3. Step 3: Cross multiply
   139,736.71x = 192,861.80 × 82,372.61
4. Step 4: Simplify right side
   139,736.71x = 15,886,529,835.30
5. Step 5: Solve for x
   x = 15,886,529,835.30/139,736.71
6. Step 6: Final answer
   x = 113,689.02