Finding the Fourth Proportional to 89,390.50, 123,352.80 and 49,105.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,390.50 : 123,352.80 = 49,105.96 : x
2. Step 2: Convert to fraction form
   89,390.50/123,352.80 = 49,105.96/x
3. Step 3: Cross multiply
   89,390.50x = 123,352.80 × 49,105.96
4. Step 4: Simplify right side
   89,390.50x = 6,057,357,662.69
5. Step 5: Solve for x
   x = 6,057,357,662.69/89,390.50
6. Step 6: Final answer
   x = 67,762.88