Finding the Fourth Proportional to 43,142.74, 64,729.59 and 16,866.34

Step by Step Solution

1. Step 1: Write the proportion equation
   43,142.74 : 64,729.59 = 16,866.34 : x
2. Step 2: Convert to fraction form
   43,142.74/64,729.59 = 16,866.34/x
3. Step 3: Cross multiply
   43,142.74x = 64,729.59 × 16,866.34
4. Step 4: Simplify right side
   43,142.74x = 1,091,751,273.00
5. Step 5: Solve for x
   x = 1,091,751,273.00/43,142.74
6. Step 6: Final answer
   x = 25,305.56