Finding the Fourth Proportional to 42,444.70, 63,913.67 and 31,429.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,444.70 : 63,913.67 = 31,429.42 : x
2. Step 2: Convert to fraction form
   42,444.70/63,913.67 = 31,429.42/x
3. Step 3: Cross multiply
   42,444.70x = 63,913.67 × 31,429.42
4. Step 4: Simplify right side
   42,444.70x = 2,008,769,578.17
5. Step 5: Solve for x
   x = 2,008,769,578.17/42,444.70
6. Step 6: Final answer
   x = 47,326.75