Finding the Fourth Proportional to 42,601.56, 63,912.06 and 13,023.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,601.56 : 63,912.06 = 13,023.60 : x
2. Step 2: Convert to fraction form
   42,601.56/63,912.06 = 13,023.60/x
3. Step 3: Cross multiply
   42,601.56x = 63,912.06 × 13,023.60
4. Step 4: Simplify right side
   42,601.56x = 832,365,104.62
5. Step 5: Solve for x
   x = 832,365,104.62/42,601.56
6. Step 6: Final answer
   x = 19,538.37