Finding the Fourth Proportional to 78,806.89, 108,677.65 and 53,023.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,806.89 : 108,677.65 = 53,023.53 : x
2. Step 2: Convert to fraction form
   78,806.89/108,677.65 = 53,023.53/x
3. Step 3: Cross multiply
   78,806.89x = 108,677.65 × 53,023.53
4. Step 4: Simplify right side
   78,806.89x = 5,762,472,635.10
5. Step 5: Solve for x
   x = 5,762,472,635.10/78,806.89
6. Step 6: Final answer
   x = 73,121.43