Finding the Fourth Proportional to 42,443.22, 63,647.49 and 18,429.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,443.22 : 63,647.49 = 18,429.06 : x
2. Step 2: Convert to fraction form
   42,443.22/63,647.49 = 18,429.06/x
3. Step 3: Cross multiply
   42,443.22x = 63,647.49 × 18,429.06
4. Step 4: Simplify right side
   42,443.22x = 1,172,963,412.06
5. Step 5: Solve for x
   x = 1,172,963,412.06/42,443.22
6. Step 6: Final answer
   x = 27,636.06