Finding the Fourth Proportional to 89,462.45, 123,469.86 and 57,723.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,462.45 : 123,469.86 = 57,723.68 : x
2. Step 2: Convert to fraction form
   89,462.45/123,469.86 = 57,723.68/x
3. Step 3: Cross multiply
   89,462.45x = 123,469.86 × 57,723.68
4. Step 4: Simplify right side
   89,462.45x = 7,127,134,688.28
5. Step 5: Solve for x
   x = 7,127,134,688.28/89,462.45
6. Step 6: Final answer
   x = 79,666.21