Finding the Fourth Proportional to 42,405.10, 63,623.24 and 17,438.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,405.10 : 63,623.24 = 17,438.47 : x
2. Step 2: Convert to fraction form
   42,405.10/63,623.24 = 17,438.47/x
3. Step 3: Cross multiply
   42,405.10x = 63,623.24 × 17,438.47
4. Step 4: Simplify right side
   42,405.10x = 1,109,491,962.04
5. Step 5: Solve for x
   x = 1,109,491,962.04/42,405.10
6. Step 6: Final answer
   x = 26,164.12