Finding the Fourth Proportional to 43,067.16, 64,610.06 and 13,078.94

Step by Step Solution

1. Step 1: Write the proportion equation
   43,067.16 : 64,610.06 = 13,078.94 : x
2. Step 2: Convert to fraction form
   43,067.16/64,610.06 = 13,078.94/x
3. Step 3: Cross multiply
   43,067.16x = 64,610.06 × 13,078.94
4. Step 4: Simplify right side
   43,067.16x = 845,030,709.69
5. Step 5: Solve for x
   x = 845,030,709.69/43,067.16
6. Step 6: Final answer
   x = 19,621.23