Finding the Fourth Proportional to 89,642.42, 123,705.63 and 49,355.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,642.42 : 123,705.63 = 49,355.42 : x
2. Step 2: Convert to fraction form
   89,642.42/123,705.63 = 49,355.42/x
3. Step 3: Cross multiply
   89,642.42x = 123,705.63 × 49,355.42
4. Step 4: Simplify right side
   89,642.42x = 6,105,543,325.01
5. Step 5: Solve for x
   x = 6,105,543,325.01/89,642.42
6. Step 6: Final answer
   x = 68,109.98