Finding the Fourth Proportional to 139,793.82, 192,917.67 and 76,131.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,793.82 : 192,917.67 = 76,131.54 : x
2. Step 2: Convert to fraction form
   139,793.82/192,917.67 = 76,131.54/x
3. Step 3: Cross multiply
   139,793.82x = 192,917.67 × 76,131.54
4. Step 4: Simplify right side
   139,793.82x = 14,687,119,310.31
5. Step 5: Solve for x
   x = 14,687,119,310.31/139,793.82
6. Step 6: Final answer
   x = 105,062.72