Finding the Fourth Proportional to 43,057.89, 64,551.98 and 13,460.49

Step by Step Solution

1. Step 1: Write the proportion equation
   43,057.89 : 64,551.98 = 13,460.49 : x
2. Step 2: Convert to fraction form
   43,057.89/64,551.98 = 13,460.49/x
3. Step 3: Cross multiply
   43,057.89x = 64,551.98 × 13,460.49
4. Step 4: Simplify right side
   43,057.89x = 868,901,314.92
5. Step 5: Solve for x
   x = 868,901,314.92/43,057.89
6. Step 6: Final answer
   x = 20,179.84