Finding the Fourth Proportional to 78,326, 108,089.16 and 42,517.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,326 : 108,089.16 = 42,517.16 : x
2. Step 2: Convert to fraction form
   78,326/108,089.16 = 42,517.16/x
3. Step 3: Cross multiply
   78,326x = 108,089.16 × 42,517.16
4. Step 4: Simplify right side
   78,326x = 4,595,644,109.99
5. Step 5: Solve for x
   x = 4,595,644,109.99/78,326
6. Step 6: Final answer
   x = 58,673.29