Finding the Fourth Proportional to 89,764.81, 123,878.06 and 49,479.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89,764.81 : 123,878.06 = 49,479.05 : x
2. Step 2: Convert to fraction form
   89,764.81/123,878.06 = 49,479.05/x
3. Step 3: Cross multiply
   89,764.81x = 123,878.06 × 49,479.05
4. Step 4: Simplify right side
   89,764.81x = 6,129,368,972.49
5. Step 5: Solve for x
   x = 6,129,368,972.49/89,764.81
6. Step 6: Final answer
   x = 68,282.54