Finding the Fourth Proportional to 89,382.35, 123,246.56 and 57,074.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89,382.35 : 123,246.56 = 57,074.49 : x
2. Step 2: Convert to fraction form
   89,382.35/123,246.56 = 57,074.49/x
3. Step 3: Cross multiply
   89,382.35x = 123,246.56 × 57,074.49
4. Step 4: Simplify right side
   89,382.35x = 7,034,234,698.94
5. Step 5: Solve for x
   x = 7,034,234,698.94/89,382.35
6. Step 6: Final answer
   x = 78,698.25