Finding the Fourth Proportional to 89,768.55, 123,845.83 and 51,514.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,768.55 : 123,845.83 = 51,514.28 : x
2. Step 2: Convert to fraction form
   89,768.55/123,845.83 = 51,514.28/x
3. Step 3: Cross multiply
   89,768.55x = 123,845.83 × 51,514.28
4. Step 4: Simplify right side
   89,768.55x = 6,379,828,479.86
5. Step 5: Solve for x
   x = 6,379,828,479.86/89,768.55
6. Step 6: Final answer
   x = 71,069.75