Finding the Fourth Proportional to 78,420.86, 117,565.15 and 34,014.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,420.86 : 117,565.15 = 34,014.16 : x
2. Step 2: Convert to fraction form
   78,420.86/117,565.15 = 34,014.16/x
3. Step 3: Cross multiply
   78,420.86x = 117,565.15 × 34,014.16
4. Step 4: Simplify right side
   78,420.86x = 3,998,879,822.52
5. Step 5: Solve for x
   x = 3,998,879,822.52/78,420.86
6. Step 6: Final answer
   x = 50,992.56