Finding the Fourth Proportional to 45,919.05, 68,882.37 and 12,641.82

Step by Step Solution

1. Step 1: Write the proportion equation
   45,919.05 : 68,882.37 = 12,641.82 : x
2. Step 2: Convert to fraction form
   45,919.05/68,882.37 = 12,641.82/x
3. Step 3: Cross multiply
   45,919.05x = 68,882.37 × 12,641.82
4. Step 4: Simplify right side
   45,919.05x = 870,798,522.71
5. Step 5: Solve for x
   x = 870,798,522.71/45,919.05
6. Step 6: Final answer
   x = 18,963.77