Finding the Fourth Proportional to 79,137, 109,262.52 and 50,472.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,137 : 109,262.52 = 50,472.72 : x
2. Step 2: Convert to fraction form
   79,137/109,262.52 = 50,472.72/x
3. Step 3: Cross multiply
   79,137x = 109,262.52 × 50,472.72
4. Step 4: Simplify right side
   79,137x = 5,514,776,578.45
5. Step 5: Solve for x
   x = 5,514,776,578.45/79,137
6. Step 6: Final answer
   x = 69,686.45