Finding the Fourth Proportional to 116,540.30, 174,940.05 and 72,217.10

Step by Step Solution

1. Step 1: Write the proportion equation
   116,540.30 : 174,940.05 = 72,217.10 : x
2. Step 2: Convert to fraction form
   116,540.30/174,940.05 = 72,217.10/x
3. Step 3: Cross multiply
   116,540.30x = 174,940.05 × 72,217.10
4. Step 4: Simplify right side
   116,540.30x = 12,633,663,084.86
5. Step 5: Solve for x
   x = 12,633,663,084.86/116,540.30
6. Step 6: Final answer
   x = 108,405.96