Finding the Fourth Proportional to 78,770.88, 108,700.38 and 42,959.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,770.88 : 108,700.38 = 42,959.97 : x
2. Step 2: Convert to fraction form
   78,770.88/108,700.38 = 42,959.97/x
3. Step 3: Cross multiply
   78,770.88x = 108,700.38 × 42,959.97
4. Step 4: Simplify right side
   78,770.88x = 4,669,765,063.79
5. Step 5: Solve for x
   x = 4,669,765,063.79/78,770.88
6. Step 6: Final answer
   x = 59,282.89