Finding the Fourth Proportional to 42,444.72, 63,674.92 and 13,983.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,444.72 : 63,674.92 = 13,983.28 : x
2. Step 2: Convert to fraction form
   42,444.72/63,674.92 = 13,983.28/x
3. Step 3: Cross multiply
   42,444.72x = 63,674.92 × 13,983.28
4. Step 4: Simplify right side
   42,444.72x = 890,384,235.34
5. Step 5: Solve for x
   x = 890,384,235.34/42,444.72
6. Step 6: Final answer
   x = 20,977.50