Finding the Fourth Proportional to 89,890.85, 123,997.00 and 57,613.97

Step by Step Solution

1. Step 1: Write the proportion equation
   89,890.85 : 123,997.00 = 57,613.97 : x
2. Step 2: Convert to fraction form
   89,890.85/123,997.00 = 57,613.97/x
3. Step 3: Cross multiply
   89,890.85x = 123,997.00 × 57,613.97
4. Step 4: Simplify right side
   89,890.85x = 7,143,959,604.05
5. Step 5: Solve for x
   x = 7,143,959,604.05/89,890.85
6. Step 6: Final answer
   x = 79,473.71