Finding the Fourth Proportional to 89,720.24, 123,814.18 and 49,433.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,720.24 : 123,814.18 = 49,433.88 : x
2. Step 2: Convert to fraction form
   89,720.24/123,814.18 = 49,433.88/x
3. Step 3: Cross multiply
   89,720.24x = 123,814.18 × 49,433.88
4. Step 4: Simplify right side
   89,720.24x = 6,120,615,100.15
5. Step 5: Solve for x
   x = 6,120,615,100.15/89,720.24
6. Step 6: Final answer
   x = 68,218.89