Finding the Fourth Proportional to 42,300.25, 63,448.03 and 14,217.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,300.25 : 63,448.03 = 14,217.40 : x
2. Step 2: Convert to fraction form
   42,300.25/63,448.03 = 14,217.40/x
3. Step 3: Cross multiply
   42,300.25x = 63,448.03 × 14,217.40
4. Step 4: Simplify right side
   42,300.25x = 902,065,704.48
5. Step 5: Solve for x
   x = 902,065,704.48/42,300.25
6. Step 6: Final answer
   x = 21,325.31