Finding the Fourth Proportional to 42,309.52, 63,416.76 and 20,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309.52 : 63,416.76 = 20,104.72 : x
2. Step 2: Convert to fraction form
   42,309.52/63,416.76 = 20,104.72/x
3. Step 3: Cross multiply
   42,309.52x = 63,416.76 × 20,104.72
4. Step 4: Simplify right side
   42,309.52x = 1,274,976,203.11
5. Step 5: Solve for x
   x = 1,274,976,203.11/42,309.52
6. Step 6: Final answer
   x = 30,134.50