Finding the Fourth Proportional to 89,695.89, 123,780.96 and 51,457.11

Step by Step Solution

1. Step 1: Write the proportion equation
   89,695.89 : 123,780.96 = 51,457.11 : x
2. Step 2: Convert to fraction form
   89,695.89/123,780.96 = 51,457.11/x
3. Step 3: Cross multiply
   89,695.89x = 123,780.96 × 51,457.11
4. Step 4: Simplify right side
   89,695.89x = 6,369,410,010.45
5. Step 5: Solve for x
   x = 6,369,410,010.45/89,695.89
6. Step 6: Final answer
   x = 71,011.17