Finding the Fourth Proportional to 30,746.79, 42,434.59 and 17,320.63

Step by Step Solution

1. Step 1: Write the proportion equation
   30,746.79 : 42,434.59 = 17,320.63 : x
2. Step 2: Convert to fraction form
   30,746.79/42,434.59 = 17,320.63/x
3. Step 3: Cross multiply
   30,746.79x = 42,434.59 × 17,320.63
4. Step 4: Simplify right side
   30,746.79x = 734,993,832.59
5. Step 5: Solve for x
   x = 734,993,832.59/30,746.79
6. Step 6: Final answer
   x = 23,904.73