Finding the Fourth Proportional to 89,779.48, 123,890.68 and 49,493.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,779.48 : 123,890.68 = 49,493.18 : x
2. Step 2: Convert to fraction form
   89,779.48/123,890.68 = 49,493.18/x
3. Step 3: Cross multiply
   89,779.48x = 123,890.68 × 49,493.18
4. Step 4: Simplify right side
   89,779.48x = 6,131,743,725.56
5. Step 5: Solve for x
   x = 6,131,743,725.56/89,779.48
6. Step 6: Final answer
   x = 68,297.83