Finding the Fourth Proportional to 79,269.76, 109,393.50 and 47,440

Step by Step Solution

1. Step 1: Write the proportion equation
   79,269.76 : 109,393.50 = 47,440 : x
2. Step 2: Convert to fraction form
   79,269.76/109,393.50 = 47,440/x
3. Step 3: Cross multiply
   79,269.76x = 109,393.50 × 47,440
4. Step 4: Simplify right side
   79,269.76x = 5,189,627,640
5. Step 5: Solve for x
   x = 5,189,627,640/79,269.76
6. Step 6: Final answer
   x = 65,467.94