Finding the Fourth Proportional to 89,475.40, 123,478.42 and 49,190.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,475.40 : 123,478.42 = 49,190.18 : x
2. Step 2: Convert to fraction form
   89,475.40/123,478.42 = 49,190.18/x
3. Step 3: Cross multiply
   89,475.40x = 123,478.42 × 49,190.18
4. Step 4: Simplify right side
   89,475.40x = 6,073,925,705.92
5. Step 5: Solve for x
   x = 6,073,925,705.92/89,475.40
6. Step 6: Final answer
   x = 67,883.75