Finding the Fourth Proportional to 89,642.57, 123,705.75 and 49,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,642.57 : 123,705.75 = 49,355.50 : x
2. Step 2: Convert to fraction form
   89,642.57/123,705.75 = 49,355.50/x
3. Step 3: Cross multiply
   89,642.57x = 123,705.75 × 49,355.50
4. Step 4: Simplify right side
   89,642.57x = 6,105,559,483.84
5. Step 5: Solve for x
   x = 6,105,559,483.84/89,642.57
6. Step 6: Final answer
   x = 68,110.04