Finding the Fourth Proportional to 39,859, 55,005.42 and 23,101.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,859 : 55,005.42 = 23,101.72 : x
2. Step 2: Convert to fraction form
   39,859/55,005.42 = 23,101.72/x
3. Step 3: Cross multiply
   39,859x = 55,005.42 × 23,101.72
4. Step 4: Simplify right side
   39,859x = 1,270,719,811.32
5. Step 5: Solve for x
   x = 1,270,719,811.32/39,859
6. Step 6: Final answer
   x = 31,880.37