Finding the Fourth Proportional to 78,766.25, 108,700.04 and 42,958.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,766.25 : 108,700.04 = 42,958.28 : x
2. Step 2: Convert to fraction form
   78,766.25/108,700.04 = 42,958.28/x
3. Step 3: Cross multiply
   78,766.25x = 108,700.04 × 42,958.28
4. Step 4: Simplify right side
   78,766.25x = 4,669,567,133.48
5. Step 5: Solve for x
   x = 4,669,567,133.48/78,766.25
6. Step 6: Final answer
   x = 59,283.86