Finding the Fourth Proportional to 42,605.34, 63,908.42 and 11,440.59

Step by Step Solution

1. Step 1: Write the proportion equation
   42,605.34 : 63,908.42 = 11,440.59 : x
2. Step 2: Convert to fraction form
   42,605.34/63,908.42 = 11,440.59/x
3. Step 3: Cross multiply
   42,605.34x = 63,908.42 × 11,440.59
4. Step 4: Simplify right side
   42,605.34x = 731,149,973.56
5. Step 5: Solve for x
   x = 731,149,973.56/42,605.34
6. Step 6: Final answer
   x = 17,160.99