Finding the Fourth Proportional to 42,185.25, 63,281.52 and 11,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,185.25 : 63,281.52 = 11,020.50 : x
2. Step 2: Convert to fraction form
   42,185.25/63,281.52 = 11,020.50/x
3. Step 3: Cross multiply
   42,185.25x = 63,281.52 × 11,020.50
4. Step 4: Simplify right side
   42,185.25x = 697,393,991.16
5. Step 5: Solve for x
   x = 697,393,991.16/42,185.25
6. Step 6: Final answer
   x = 16,531.70