Finding the Fourth Proportional to 139,749.48, 192,851.82 and 76,086.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,749.48 : 192,851.82 = 76,086.18 : x
2. Step 2: Convert to fraction form
   139,749.48/192,851.82 = 76,086.18/x
3. Step 3: Cross multiply
   139,749.48x = 192,851.82 × 76,086.18
4. Step 4: Simplify right side
   139,749.48x = 14,673,358,289.85
5. Step 5: Solve for x
   x = 14,673,358,289.85/139,749.48
6. Step 6: Final answer
   x = 104,997.59