Finding the Fourth Proportional to 42,429.78, 63,644.70 and 14,727.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,429.78 : 63,644.70 = 14,727.78 : x
2. Step 2: Convert to fraction form
   42,429.78/63,644.70 = 14,727.78/x
3. Step 3: Cross multiply
   42,429.78x = 63,644.70 × 14,727.78
4. Step 4: Simplify right side
   42,429.78x = 937,345,139.77
5. Step 5: Solve for x
   x = 937,345,139.77/42,429.78
6. Step 6: Final answer
   x = 22,091.68