Finding the Fourth Proportional to 89,453.31, 123,446.84 and 49,170.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,453.31 : 123,446.84 = 49,170.80 : x
2. Step 2: Convert to fraction form
   89,453.31/123,446.84 = 49,170.80/x
3. Step 3: Cross multiply
   89,453.31x = 123,446.84 × 49,170.80
4. Step 4: Simplify right side
   89,453.31x = 6,069,979,880.27
5. Step 5: Solve for x
   x = 6,069,979,880.27/89,453.31
6. Step 6: Final answer
   x = 67,856.40