Finding the Fourth Proportional to 57,116.86, 78,816.54 and 34,146.16

Step by Step Solution

1. Step 1: Write the proportion equation
   57,116.86 : 78,816.54 = 34,146.16 : x
2. Step 2: Convert to fraction form
   57,116.86/78,816.54 = 34,146.16/x
3. Step 3: Cross multiply
   57,116.86x = 78,816.54 × 34,146.16
4. Step 4: Simplify right side
   57,116.86x = 2,691,282,185.49
5. Step 5: Solve for x
   x = 2,691,282,185.49/57,116.86
6. Step 6: Final answer
   x = 47,118.87