Finding the Fourth Proportional to 64,818.37, 89,456.57 and 40,943.89

Step by Step Solution

1. Step 1: Write the proportion equation
   64,818.37 : 89,456.57 = 40,943.89 : x
2. Step 2: Convert to fraction form
   64,818.37/89,456.57 = 40,943.89/x
3. Step 3: Cross multiply
   64,818.37x = 89,456.57 × 40,943.89
4. Step 4: Simplify right side
   64,818.37x = 3,662,699,961.86
5. Step 5: Solve for x
   x = 3,662,699,961.86/64,818.37
6. Step 6: Final answer
   x = 56,507.13