Finding the Fourth Proportional to 42,294.72, 63,443.12 and 14,215.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,294.72 : 63,443.12 = 14,215.18 : x
2. Step 2: Convert to fraction form
   42,294.72/63,443.12 = 14,215.18/x
3. Step 3: Cross multiply
   42,294.72x = 63,443.12 × 14,215.18
4. Step 4: Simplify right side
   42,294.72x = 901,855,370.56
5. Step 5: Solve for x
   x = 901,855,370.56/42,294.72
6. Step 6: Final answer
   x = 21,323.12