Finding the Fourth Proportional to 78,706.49, 108,611.78 and 42,895.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,706.49 : 108,611.78 = 42,895.73 : x
2. Step 2: Convert to fraction form
   78,706.49/108,611.78 = 42,895.73/x
3. Step 3: Cross multiply
   78,706.49x = 108,611.78 × 42,895.73
4. Step 4: Simplify right side
   78,706.49x = 4,658,981,589.70
5. Step 5: Solve for x
   x = 4,658,981,589.70/78,706.49
6. Step 6: Final answer
   x = 59,194.38