Finding the Fourth Proportional to 81,669.87, 122,552.60 and 45,676.71

Step by Step Solution

1. Step 1: Write the proportion equation
   81,669.87 : 122,552.60 = 45,676.71 : x
2. Step 2: Convert to fraction form
   81,669.87/122,552.60 = 45,676.71/x
3. Step 3: Cross multiply
   81,669.87x = 122,552.60 × 45,676.71
4. Step 4: Simplify right side
   81,669.87x = 5,597,799,341.56
5. Step 5: Solve for x
   x = 5,597,799,341.56/81,669.87
6. Step 6: Final answer
   x = 68,541.79