Finding the Fourth Proportional to 139,719.74, 209,453.18 and 50,952.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,719.74 : 209,453.18 = 50,952.48 : x
2. Step 2: Convert to fraction form
   139,719.74/209,453.18 = 50,952.48/x
3. Step 3: Cross multiply
   139,719.74x = 209,453.18 × 50,952.48
4. Step 4: Simplify right side
   139,719.74x = 10,672,158,964.89
5. Step 5: Solve for x
   x = 10,672,158,964.89/139,719.74
6. Step 6: Final answer
   x = 76,382.61