Finding the Fourth Proportional to 79,014.32, 109,017.78 and 47,171.60

Step by Step Solution

1. Step 1: Write the proportion equation
   79,014.32 : 109,017.78 = 47,171.60 : x
2. Step 2: Convert to fraction form
   79,014.32/109,017.78 = 47,171.60/x
3. Step 3: Cross multiply
   79,014.32x = 109,017.78 × 47,171.60
4. Step 4: Simplify right side
   79,014.32x = 5,142,543,111.05
5. Step 5: Solve for x
   x = 5,142,543,111.05/79,014.32
6. Step 6: Final answer
   x = 65,083.68