Finding the Fourth Proportional to 42,636.24, 63,998.73 and 31,404.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,636.24 : 63,998.73 = 31,404.27 : x
2. Step 2: Convert to fraction form
   42,636.24/63,998.73 = 31,404.27/x
3. Step 3: Cross multiply
   42,636.24x = 63,998.73 × 31,404.27
4. Step 4: Simplify right side
   42,636.24x = 2,009,833,396.58
5. Step 5: Solve for x
   x = 2,009,833,396.58/42,636.24
6. Step 6: Final answer
   x = 47,139.09