Finding the Fourth Proportional to 139,974.76, 209,900.38 and 40,112.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,974.76 : 209,900.38 = 40,112.29 : x
2. Step 2: Convert to fraction form
   139,974.76/209,900.38 = 40,112.29/x
3. Step 3: Cross multiply
   139,974.76x = 209,900.38 × 40,112.29
4. Step 4: Simplify right side
   139,974.76x = 8,419,585,150.98
5. Step 5: Solve for x
   x = 8,419,585,150.98/139,974.76
6. Step 6: Final answer
   x = 60,150.74