Finding the Fourth Proportional to 78,661.46, 108,553.01 and 42,851.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,661.46 : 108,553.01 = 42,851.73 : x
2. Step 2: Convert to fraction form
   78,661.46/108,553.01 = 42,851.73/x
3. Step 3: Cross multiply
   78,661.46x = 108,553.01 × 42,851.73
4. Step 4: Simplify right side
   78,661.46x = 4,651,684,709.06
5. Step 5: Solve for x
   x = 4,651,684,709.06/78,661.46
6. Step 6: Final answer
   x = 59,135.50