Finding the Fourth Proportional to 78,456.72, 117,672.67 and 34,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.72 : 117,672.67 = 34,071.56 : x
2. Step 2: Convert to fraction form
   78,456.72/117,672.67 = 34,071.56/x
3. Step 3: Cross multiply
   78,456.72x = 117,672.67 × 34,071.56
4. Step 4: Simplify right side
   78,456.72x = 4,009,291,436.27
5. Step 5: Solve for x
   x = 4,009,291,436.27/78,456.72
6. Step 6: Final answer
   x = 51,101.95