Finding the Fourth Proportional to 42,401.42, 63,603.48 and 21,329.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,401.42 : 63,603.48 = 21,329.96 : x
2. Step 2: Convert to fraction form
   42,401.42/63,603.48 = 21,329.96/x
3. Step 3: Cross multiply
   42,401.42x = 63,603.48 × 21,329.96
4. Step 4: Simplify right side
   42,401.42x = 1,356,659,684.26
5. Step 5: Solve for x
   x = 1,356,659,684.26/42,401.42
6. Step 6: Final answer
   x = 31,995.62