Finding the Fourth Proportional to 51,160.78, 76,751.58 and 21,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   51,160.78 : 76,751.58 = 21,578.72 : x
2. Step 2: Convert to fraction form
   51,160.78/76,751.58 = 21,578.72/x
3. Step 3: Cross multiply
   51,160.78x = 76,751.58 × 21,578.72
4. Step 4: Simplify right side
   51,160.78x = 1,656,200,854.38
5. Step 5: Solve for x
   x = 1,656,200,854.38/51,160.78
6. Step 6: Final answer
   x = 32,372.47