Finding the Fourth Proportional to 42,492, 63,745.60 and 17,518.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,492 : 63,745.60 = 17,518.16 : x
2. Step 2: Convert to fraction form
   42,492/63,745.60 = 17,518.16/x
3. Step 3: Cross multiply
   42,492x = 63,745.60 × 17,518.16
4. Step 4: Simplify right side
   42,492x = 1,116,705,620.10
5. Step 5: Solve for x
   x = 1,116,705,620.10/42,492
6. Step 6: Final answer
   x = 26,280.37