Finding the Fourth Proportional to 89,643.15, 123,706.53 and 49,356.09

Step by Step Solution

1. Step 1: Write the proportion equation
   89,643.15 : 123,706.53 = 49,356.09 : x
2. Step 2: Convert to fraction form
   89,643.15/123,706.53 = 49,356.09/x
3. Step 3: Cross multiply
   89,643.15x = 123,706.53 × 49,356.09
4. Step 4: Simplify right side
   89,643.15x = 6,105,670,628.27
5. Step 5: Solve for x
   x = 6,105,670,628.27/89,643.15
6. Step 6: Final answer
   x = 68,110.84