Finding the Fourth Proportional to 42,200.75, 63,281.60 and 15,540.00

Step by Step Solution

1. Step 1: Write the proportion equation
   42,200.75 : 63,281.60 = 15,540.00 : x
2. Step 2: Convert to fraction form
   42,200.75/63,281.60 = 15,540.00/x
3. Step 3: Cross multiply
   42,200.75x = 63,281.60 × 15,540.00
4. Step 4: Simplify right side
   42,200.75x = 983,396,250.64
5. Step 5: Solve for x
   x = 983,396,250.64/42,200.75
6. Step 6: Final answer
   x = 23,302.82