Finding the Fourth Proportional to 31,486.74, 43,451.61 and 17,339.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,486.74 : 43,451.61 = 17,339.58 : x
2. Step 2: Convert to fraction form
   31,486.74/43,451.61 = 17,339.58/x
3. Step 3: Cross multiply
   31,486.74x = 43,451.61 × 17,339.58
4. Step 4: Simplify right side
   31,486.74x = 753,432,667.72
5. Step 5: Solve for x
   x = 753,432,667.72/31,486.74
6. Step 6: Final answer
   x = 23,928.57