Finding the Fourth Proportional to 42,029.55, 63,023.72 and 13,940.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,029.55 : 63,023.72 = 13,940.15 : x
2. Step 2: Convert to fraction form
   42,029.55/63,023.72 = 13,940.15/x
3. Step 3: Cross multiply
   42,029.55x = 63,023.72 × 13,940.15
4. Step 4: Simplify right side
   42,029.55x = 878,559,725.54
5. Step 5: Solve for x
   x = 878,559,725.54/42,029.55
6. Step 6: Final answer
   x = 20,903.38