Finding the Fourth Proportional to 89,470.71, 123,469.83 and 49,188.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,470.71 : 123,469.83 = 49,188.60 : x
2. Step 2: Convert to fraction form
   89,470.71/123,469.83 = 49,188.60/x
3. Step 3: Cross multiply
   89,470.71x = 123,469.83 × 49,188.60
4. Step 4: Simplify right side
   89,470.71x = 6,073,308,079.94
5. Step 5: Solve for x
   x = 6,073,308,079.94/89,470.71
6. Step 6: Final answer
   x = 67,880.41