Finding the Fourth Proportional to 111,156.94, 166,737.89 and 40,085.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,156.94 : 166,737.89 = 40,085.31 : x
2. Step 2: Convert to fraction form
   111,156.94/166,737.89 = 40,085.31/x
3. Step 3: Cross multiply
   111,156.94x = 166,737.89 × 40,085.31
4. Step 4: Simplify right side
   111,156.94x = 6,683,740,734.88
5. Step 5: Solve for x
   x = 6,683,740,734.88/111,156.94
6. Step 6: Final answer
   x = 60,128.87