Finding the Fourth Proportional to 89,457.24, 123,451.30 and 49,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,457.24 : 123,451.30 = 49,174.50 : x
2. Step 2: Convert to fraction form
   89,457.24/123,451.30 = 49,174.50/x
3. Step 3: Cross multiply
   89,457.24x = 123,451.30 × 49,174.50
4. Step 4: Simplify right side
   89,457.24x = 6,070,655,951.85
5. Step 5: Solve for x
   x = 6,070,655,951.85/89,457.24
6. Step 6: Final answer
   x = 67,860.98