Finding the Fourth Proportional to 51,106.72, 76,648.56 and 14,173.60

Step by Step Solution

1. Step 1: Write the proportion equation
   51,106.72 : 76,648.56 = 14,173.60 : x
2. Step 2: Convert to fraction form
   51,106.72/76,648.56 = 14,173.60/x
3. Step 3: Cross multiply
   51,106.72x = 76,648.56 × 14,173.60
4. Step 4: Simplify right side
   51,106.72x = 1,086,386,030.02
5. Step 5: Solve for x
   x = 1,086,386,030.02/51,106.72
6. Step 6: Final answer
   x = 21,257.21