Finding the Fourth Proportional to 42,144.32, 63,282.24 and 40,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,144.32 : 63,282.24 = 40,274.72 : x
2. Step 2: Convert to fraction form
   42,144.32/63,282.24 = 40,274.72/x
3. Step 3: Cross multiply
   42,144.32x = 63,282.24 × 40,274.72
4. Step 4: Simplify right side
   42,144.32x = 2,548,674,496.97
5. Step 5: Solve for x
   x = 2,548,674,496.97/42,144.32
6. Step 6: Final answer
   x = 60,474.92