Finding the Fourth Proportional to 31,460.86, 43,416.06 and 17,120.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,460.86 : 43,416.06 = 17,120.69 : x
2. Step 2: Convert to fraction form
   31,460.86/43,416.06 = 17,120.69/x
3. Step 3: Cross multiply
   31,460.86x = 43,416.06 × 17,120.69
4. Step 4: Simplify right side
   31,460.86x = 743,312,904.28
5. Step 5: Solve for x
   x = 743,312,904.28/31,460.86
6. Step 6: Final answer
   x = 23,626.59