Finding the Fourth Proportional to 78,617.79, 108,491.00 and 42,808.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,617.79 : 108,491.00 = 42,808.23 : x
2. Step 2: Convert to fraction form
   78,617.79/108,491.00 = 42,808.23/x
3. Step 3: Cross multiply
   78,617.79x = 108,491.00 × 42,808.23
4. Step 4: Simplify right side
   78,617.79x = 4,644,307,466.89
5. Step 5: Solve for x
   x = 4,644,307,466.89/78,617.79
6. Step 6: Final answer
   x = 59,074.51