Finding the Fourth Proportional to 40,131.69, 55,381.61 and 23,135.85

Step by Step Solution

1. Step 1: Write the proportion equation
   40,131.69 : 55,381.61 = 23,135.85 : x
2. Step 2: Convert to fraction form
   40,131.69/55,381.61 = 23,135.85/x
3. Step 3: Cross multiply
   40,131.69x = 55,381.61 × 23,135.85
4. Step 4: Simplify right side
   40,131.69x = 1,281,300,229.13
5. Step 5: Solve for x
   x = 1,281,300,229.13/40,131.69
6. Step 6: Final answer
   x = 31,927.40