Finding the Fourth Proportional to 139,811.82, 192,940.28 and 76,149.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,811.82 : 192,940.28 = 76,149.62 : x
2. Step 2: Convert to fraction form
   139,811.82/192,940.28 = 76,149.62/x
3. Step 3: Cross multiply
   139,811.82x = 192,940.28 × 76,149.62
4. Step 4: Simplify right side
   139,811.82x = 14,692,329,004.69
5. Step 5: Solve for x
   x = 14,692,329,004.69/139,811.82
6. Step 6: Final answer
   x = 105,086.46