Finding the Fourth Proportional to 111,940.86, 167,802.40 and 71,846.78

Step by Step Solution

1. Step 1: Write the proportion equation
   111,940.86 : 167,802.40 = 71,846.78 : x
2. Step 2: Convert to fraction form
   111,940.86/167,802.40 = 71,846.78/x
3. Step 3: Cross multiply
   111,940.86x = 167,802.40 × 71,846.78
4. Step 4: Simplify right side
   111,940.86x = 12,056,062,116.27
5. Step 5: Solve for x
   x = 12,056,062,116.27/111,940.86
6. Step 6: Final answer
   x = 107,700.28