Finding the Fourth Proportional to 30,978.37, 42,749.43 and 17,365.51

Step by Step Solution

1. Step 1: Write the proportion equation
   30,978.37 : 42,749.43 = 17,365.51 : x
2. Step 2: Convert to fraction form
   30,978.37/42,749.43 = 17,365.51/x
3. Step 3: Cross multiply
   30,978.37x = 42,749.43 × 17,365.51
4. Step 4: Simplify right side
   30,978.37x = 742,365,654.16
5. Step 5: Solve for x
   x = 742,365,654.16/30,978.37
6. Step 6: Final answer
   x = 23,964.00