Finding the Fourth Proportional to 30,492.78, 42,078.52 and 17,064.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,492.78 : 42,078.52 = 17,064.06 : x
2. Step 2: Convert to fraction form
   30,492.78/42,078.52 = 17,064.06/x
3. Step 3: Cross multiply
   30,492.78x = 42,078.52 × 17,064.06
4. Step 4: Simplify right side
   30,492.78x = 718,030,389.99
5. Step 5: Solve for x
   x = 718,030,389.99/30,492.78
6. Step 6: Final answer
   x = 23,547.55