Finding the Fourth Proportional to 42,584.72, 63,884.79 and 17,611.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,584.72 : 63,884.79 = 17,611.20 : x
2. Step 2: Convert to fraction form
   42,584.72/63,884.79 = 17,611.20/x
3. Step 3: Cross multiply
   42,584.72x = 63,884.79 × 17,611.20
4. Step 4: Simplify right side
   42,584.72x = 1,125,087,813.65
5. Step 5: Solve for x
   x = 1,125,087,813.65/42,584.72
6. Step 6: Final answer
   x = 26,419.99