Finding the Fourth Proportional to 42,271.68, 63,402.72 and 11,109.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271.68 : 63,402.72 = 11,109.36 : x
2. Step 2: Convert to fraction form
   42,271.68/63,402.72 = 11,109.36/x
3. Step 3: Cross multiply
   42,271.68x = 63,402.72 × 11,109.36
4. Step 4: Simplify right side
   42,271.68x = 704,363,641.46
5. Step 5: Solve for x
   x = 704,363,641.46/42,271.68
6. Step 6: Final answer
   x = 16,662.78