Finding the Fourth Proportional to 42,271.30, 63,404.77 and 14,191.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271.30 : 63,404.77 = 14,191.57 : x
2. Step 2: Convert to fraction form
   42,271.30/63,404.77 = 14,191.57/x
3. Step 3: Cross multiply
   42,271.30x = 63,404.77 × 14,191.57
4. Step 4: Simplify right side
   42,271.30x = 899,813,231.79
5. Step 5: Solve for x
   x = 899,813,231.79/42,271.30
6. Step 6: Final answer
   x = 21,286.62