Finding the Fourth Proportional to 78,410.78, 117,615.99 and 34,031.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,410.78 : 117,615.99 = 34,031.78 : x
2. Step 2: Convert to fraction form
   78,410.78/117,615.99 = 34,031.78/x
3. Step 3: Cross multiply
   78,410.78x = 117,615.99 × 34,031.78
4. Step 4: Simplify right side
   78,410.78x = 4,002,681,496.16
5. Step 5: Solve for x
   x = 4,002,681,496.16/78,410.78
6. Step 6: Final answer
   x = 51,047.59