Finding the Fourth Proportional to 139,705.05, 209,588.84 and 50,958.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,705.05 : 209,588.84 = 50,958.57 : x
2. Step 2: Convert to fraction form
   139,705.05/209,588.84 = 50,958.57/x
3. Step 3: Cross multiply
   139,705.05x = 209,588.84 × 50,958.57
4. Step 4: Simplify right side
   139,705.05x = 10,680,347,574.36
5. Step 5: Solve for x
   x = 10,680,347,574.36/139,705.05
6. Step 6: Final answer
   x = 76,449.26