Finding the Fourth Proportional to 89,457.58, 123,463.12 and 57,718.81

Step by Step Solution

1. Step 1: Write the proportion equation
   89,457.58 : 123,463.12 = 57,718.81 : x
2. Step 2: Convert to fraction form
   89,457.58/123,463.12 = 57,718.81/x
3. Step 3: Cross multiply
   89,457.58x = 123,463.12 × 57,718.81
4. Step 4: Simplify right side
   89,457.58x = 7,126,143,747.97
5. Step 5: Solve for x
   x = 7,126,143,747.97/89,457.58
6. Step 6: Final answer
   x = 79,659.48