Finding the Fourth Proportional to 42,490.82, 63,727.59 and 40,383.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,490.82 : 63,727.59 = 40,383.20 : x
2. Step 2: Convert to fraction form
   42,490.82/63,727.59 = 40,383.20/x
3. Step 3: Cross multiply
   42,490.82x = 63,727.59 × 40,383.20
4. Step 4: Simplify right side
   42,490.82x = 2,573,524,012.49
5. Step 5: Solve for x
   x = 2,573,524,012.49/42,490.82
6. Step 6: Final answer
   x = 60,566.59