Finding the Fourth Proportional to 43,162.81, 64,744.06 and 19,442.59

Step by Step Solution

1. Step 1: Write the proportion equation
   43,162.81 : 64,744.06 = 19,442.59 : x
2. Step 2: Convert to fraction form
   43,162.81/64,744.06 = 19,442.59/x
3. Step 3: Cross multiply
   43,162.81x = 64,744.06 × 19,442.59
4. Step 4: Simplify right side
   43,162.81x = 1,258,792,213.52
5. Step 5: Solve for x
   x = 1,258,792,213.52/43,162.81
6. Step 6: Final answer
   x = 29,163.82