Finding the Fourth Proportional to 42,340.40, 63,510.71 and 14,280.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,340.40 : 63,510.71 = 14,280.16 : x
2. Step 2: Convert to fraction form
   42,340.40/63,510.71 = 14,280.16/x
3. Step 3: Cross multiply
   42,340.40x = 63,510.71 × 14,280.16
4. Step 4: Simplify right side
   42,340.40x = 906,943,223.59
5. Step 5: Solve for x
   x = 906,943,223.59/42,340.40
6. Step 6: Final answer
   x = 21,420.28