Finding the Fourth Proportional to 64,743.78, 89,397.09 and 50,636.82

Step by Step Solution

1. Step 1: Write the proportion equation
   64,743.78 : 89,397.09 = 50,636.82 : x
2. Step 2: Convert to fraction form
   64,743.78/89,397.09 = 50,636.82/x
3. Step 3: Cross multiply
   64,743.78x = 89,397.09 × 50,636.82
4. Step 4: Simplify right side
   64,743.78x = 4,526,784,354.85
5. Step 5: Solve for x
   x = 4,526,784,354.85/64,743.78
6. Step 6: Final answer
   x = 69,918.44