Finding the Fourth Proportional to 42,023.51, 63,042.77 and 13,945.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,023.51 : 63,042.77 = 13,945.25 : x
2. Step 2: Convert to fraction form
   42,023.51/63,042.77 = 13,945.25/x
3. Step 3: Cross multiply
   42,023.51x = 63,042.77 × 13,945.25
4. Step 4: Simplify right side
   42,023.51x = 879,147,188.34
5. Step 5: Solve for x
   x = 879,147,188.34/42,023.51
6. Step 6: Final answer
   x = 20,920.37