Finding the Fourth Proportional to 51,021.69, 76,533.98 and 14,085.69

Step by Step Solution

1. Step 1: Write the proportion equation
   51,021.69 : 76,533.98 = 14,085.69 : x
2. Step 2: Convert to fraction form
   51,021.69/76,533.98 = 14,085.69/x
3. Step 3: Cross multiply
   51,021.69x = 76,533.98 × 14,085.69
4. Step 4: Simplify right side
   51,021.69x = 1,078,033,846.32
5. Step 5: Solve for x
   x = 1,078,033,846.32/51,021.69
6. Step 6: Final answer
   x = 21,128.93