Finding the Fourth Proportional to 50,698.52, 75,996.72 and 21,132.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,698.52 : 75,996.72 = 21,132.72 : x
2. Step 2: Convert to fraction form
   50,698.52/75,996.72 = 21,132.72/x
3. Step 3: Cross multiply
   50,698.52x = 75,996.72 × 21,132.72
4. Step 4: Simplify right side
   50,698.52x = 1,606,017,404.68
5. Step 5: Solve for x
   x = 1,606,017,404.68/50,698.52
6. Step 6: Final answer
   x = 31,677.80