Finding the Fourth Proportional to 42,243.15, 63,378.81 and 14,166

Step by Step Solution

1. Step 1: Write the proportion equation
   42,243.15 : 63,378.81 = 14,166 : x
2. Step 2: Convert to fraction form
   42,243.15/63,378.81 = 14,166/x
3. Step 3: Cross multiply
   42,243.15x = 63,378.81 × 14,166
4. Step 4: Simplify right side
   42,243.15x = 897,824,222.46
5. Step 5: Solve for x
   x = 897,824,222.46/42,243.15
6. Step 6: Final answer
   x = 21,253.72