Finding the Fourth Proportional to 42,062.84, 63,107.40 and 12,480.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,062.84 : 63,107.40 = 12,480.82 : x
2. Step 2: Convert to fraction form
   42,062.84/63,107.40 = 12,480.82/x
3. Step 3: Cross multiply
   42,062.84x = 63,107.40 × 12,480.82
4. Step 4: Simplify right side
   42,062.84x = 787,632,100.07
5. Step 5: Solve for x
   x = 787,632,100.07/42,062.84
6. Step 6: Final answer
   x = 18,725.13