Finding the Fourth Proportional to 78,786.22, 108,725.68 and 42,976.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,786.22 : 108,725.68 = 42,976.39 : x
2. Step 2: Convert to fraction form
   78,786.22/108,725.68 = 42,976.39/x
3. Step 3: Cross multiply
   78,786.22x = 108,725.68 × 42,976.39
4. Step 4: Simplify right side
   78,786.22x = 4,672,637,119.25
5. Step 5: Solve for x
   x = 4,672,637,119.25/78,786.22
6. Step 6: Final answer
   x = 59,307.80