Finding the Fourth Proportional to 42,303, 63,454.50 and 17,679

Step by Step Solution

1. Step 1: Write the proportion equation
   42,303 : 63,454.50 = 17,679 : x
2. Step 2: Convert to fraction form
   42,303/63,454.50 = 17,679/x
3. Step 3: Cross multiply
   42,303x = 63,454.50 × 17,679
4. Step 4: Simplify right side
   42,303x = 1,121,812,105.50
5. Step 5: Solve for x
   x = 1,121,812,105.50/42,303
6. Step 6: Final answer
   x = 26,518.50