Finding the Fourth Proportional to 89,660.86, 123,732.81 and 49,374.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,660.86 : 123,732.81 = 49,374.79 : x
2. Step 2: Convert to fraction form
   89,660.86/123,732.81 = 49,374.79/x
3. Step 3: Cross multiply
   89,660.86x = 123,732.81 × 49,374.79
4. Step 4: Simplify right side
   89,660.86x = 6,109,281,200.53
5. Step 5: Solve for x
   x = 6,109,281,200.53/89,660.86
6. Step 6: Final answer
   x = 68,137.66