Finding the Fourth Proportional to 78,786.35, 108,725.85 and 42,976.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,786.35 : 108,725.85 = 42,976.52 : x
2. Step 2: Convert to fraction form
   78,786.35/108,725.85 = 42,976.52/x
3. Step 3: Cross multiply
   78,786.35x = 108,725.85 × 42,976.52
4. Step 4: Simplify right side
   78,786.35x = 4,672,658,123.41
5. Step 5: Solve for x
   x = 4,672,658,123.41/78,786.35
6. Step 6: Final answer
   x = 59,307.97