Finding the Fourth Proportional to 139,524.52, 209,418.30 and 50,863.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,524.52 : 209,418.30 = 50,863.72 : x
2. Step 2: Convert to fraction form
   139,524.52/209,418.30 = 50,863.72/x
3. Step 3: Cross multiply
   139,524.52x = 209,418.30 × 50,863.72
4. Step 4: Simplify right side
   139,524.52x = 10,651,793,774.08
5. Step 5: Solve for x
   x = 10,651,793,774.08/139,524.52
6. Step 6: Final answer
   x = 76,343.53