Finding the Fourth Proportional to 139,811.06, 192,940.89 and 76,149.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,811.06 : 192,940.89 = 76,149.38 : x
2. Step 2: Convert to fraction form
   139,811.06/192,940.89 = 76,149.38/x
3. Step 3: Cross multiply
   139,811.06x = 192,940.89 × 76,149.38
4. Step 4: Simplify right side
   139,811.06x = 14,692,329,150.15
5. Step 5: Solve for x
   x = 14,692,329,150.15/139,811.06
6. Step 6: Final answer
   x = 105,087.03