Finding the Fourth Proportional to 42,443.55, 63,622.80 and 21,351.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,443.55 : 63,622.80 = 21,351.15 : x
2. Step 2: Convert to fraction form
   42,443.55/63,622.80 = 21,351.15/x
3. Step 3: Cross multiply
   42,443.55x = 63,622.80 × 21,351.15
4. Step 4: Simplify right side
   42,443.55x = 1,358,419,946.22
5. Step 5: Solve for x
   x = 1,358,419,946.22/42,443.55
6. Step 6: Final answer
   x = 32,005.33