Finding the Fourth Proportional to 52,031.31, 78,059.39 and 16,971

Step by Step Solution

1. Step 1: Write the proportion equation
   52,031.31 : 78,059.39 = 16,971 : x
2. Step 2: Convert to fraction form
   52,031.31/78,059.39 = 16,971/x
3. Step 3: Cross multiply
   52,031.31x = 78,059.39 × 16,971
4. Step 4: Simplify right side
   52,031.31x = 1,324,745,907.69
5. Step 5: Solve for x
   x = 1,324,745,907.69/52,031.31
6. Step 6: Final answer
   x = 25,460.55