Finding the Fourth Proportional to 139,306.24, 209,042.32 and 50,566.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,306.24 : 209,042.32 = 50,566.64 : x
2. Step 2: Convert to fraction form
   139,306.24/209,042.32 = 50,566.64/x
3. Step 3: Cross multiply
   139,306.24x = 209,042.32 × 50,566.64
4. Step 4: Simplify right side
   139,306.24x = 10,570,567,740.20
5. Step 5: Solve for x
   x = 10,570,567,740.20/139,306.24
6. Step 6: Final answer
   x = 75,880.07