Finding the Fourth Proportional to 42,640.35, 63,973.89 and 17,692.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,640.35 : 63,973.89 = 17,692.17 : x
2. Step 2: Convert to fraction form
   42,640.35/63,973.89 = 17,692.17/x
3. Step 3: Cross multiply
   42,640.35x = 63,973.89 × 17,692.17
4. Step 4: Simplify right side
   42,640.35x = 1,131,836,937.44
5. Step 5: Solve for x
   x = 1,131,836,937.44/42,640.35
6. Step 6: Final answer
   x = 26,543.80