Finding the Fourth Proportional to 139,804.75, 192,930.54 and 76,142.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804.75 : 192,930.54 = 76,142.54 : x
2. Step 2: Convert to fraction form
   139,804.75/192,930.54 = 76,142.54/x
3. Step 3: Cross multiply
   139,804.75x = 192,930.54 × 76,142.54
4. Step 4: Simplify right side
   139,804.75x = 14,690,220,978.46
5. Step 5: Solve for x
   x = 14,690,220,978.46/139,804.75
6. Step 6: Final answer
   x = 105,076.70