Finding the Fourth Proportional to 40,128.54, 55,359.01 and 25,985.94

Step by Step Solution

1. Step 1: Write the proportion equation
   40,128.54 : 55,359.01 = 25,985.94 : x
2. Step 2: Convert to fraction form
   40,128.54/55,359.01 = 25,985.94/x
3. Step 3: Cross multiply
   40,128.54x = 55,359.01 × 25,985.94
4. Step 4: Simplify right side
   40,128.54x = 1,438,555,505.59
5. Step 5: Solve for x
   x = 1,438,555,505.59/40,128.54
6. Step 6: Final answer
   x = 35,848.69