Finding the Fourth Proportional to 139,474.63, 209,208.10 and 50,729.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,474.63 : 209,208.10 = 50,729.82 : x
2. Step 2: Convert to fraction form
   139,474.63/209,208.10 = 50,729.82/x
3. Step 3: Cross multiply
   139,474.63x = 209,208.10 × 50,729.82
4. Step 4: Simplify right side
   139,474.63x = 10,613,089,255.54
5. Step 5: Solve for x
   x = 10,613,089,255.54/139,474.63
6. Step 6: Final answer
   x = 76,093.33