Finding the Fourth Proportional to 78,410.28, 117,615.24 and 34,031.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,410.28 : 117,615.24 = 34,031.28 : x
2. Step 2: Convert to fraction form
   78,410.28/117,615.24 = 34,031.28/x
3. Step 3: Cross multiply
   78,410.28x = 117,615.24 × 34,031.28
4. Step 4: Simplify right side
   78,410.28x = 4,002,597,164.71
5. Step 5: Solve for x
   x = 4,002,597,164.71/78,410.28
6. Step 6: Final answer
   x = 51,046.84