Finding the Fourth Proportional to 139,166.96, 208,749.87 and 50,399.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,166.96 : 208,749.87 = 50,399.73 : x
2. Step 2: Convert to fraction form
   139,166.96/208,749.87 = 50,399.73/x
3. Step 3: Cross multiply
   139,166.96x = 208,749.87 × 50,399.73
4. Step 4: Simplify right side
   139,166.96x = 10,520,937,085.54
5. Step 5: Solve for x
   x = 10,520,937,085.54/139,166.96
6. Step 6: Final answer
   x = 75,599.39