Finding the Fourth Proportional to 139,803.82, 192,931.45 and 76,141.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,803.82 : 192,931.45 = 76,141.56 : x
2. Step 2: Convert to fraction form
   139,803.82/192,931.45 = 76,141.56/x
3. Step 3: Cross multiply
   139,803.82x = 192,931.45 × 76,141.56
4. Step 4: Simplify right side
   139,803.82x = 14,690,101,576.06
5. Step 5: Solve for x
   x = 14,690,101,576.06/139,803.82
6. Step 6: Final answer
   x = 105,076.54