Finding the Fourth Proportional to 139,747.86, 192,852.45 and 76,086.09

Step by Step Solution

1. Step 1: Write the proportion equation
   139,747.86 : 192,852.45 = 76,086.09 : x
2. Step 2: Convert to fraction form
   139,747.86/192,852.45 = 76,086.09/x
3. Step 3: Cross multiply
   139,747.86x = 192,852.45 × 76,086.09
4. Step 4: Simplify right side
   139,747.86x = 14,673,388,867.42
5. Step 5: Solve for x
   x = 14,673,388,867.42/139,747.86
6. Step 6: Final answer
   x = 104,999.02