Finding the Fourth Proportional to 89,739.70, 123,754.43 and 59,057.91

Step by Step Solution

1. Step 1: Write the proportion equation
   89,739.70 : 123,754.43 = 59,057.91 : x
2. Step 2: Convert to fraction form
   89,739.70/123,754.43 = 59,057.91/x
3. Step 3: Cross multiply
   89,739.70x = 123,754.43 × 59,057.91
4. Step 4: Simplify right side
   89,739.70x = 7,308,678,136.69
5. Step 5: Solve for x
   x = 7,308,678,136.69/89,739.70
6. Step 6: Final answer
   x = 81,443.09