Finding the Fourth Proportional to 89,768.58, 123,874.98 and 49,480.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,768.58 : 123,874.98 = 49,480.12 : x
2. Step 2: Convert to fraction form
   89,768.58/123,874.98 = 49,480.12/x
3. Step 3: Cross multiply
   89,768.58x = 123,874.98 × 49,480.12
4. Step 4: Simplify right side
   89,768.58x = 6,129,348,875.40
5. Step 5: Solve for x
   x = 6,129,348,875.40/89,768.58
6. Step 6: Final answer
   x = 68,279.45