Finding the Fourth Proportional to 78,576.43, 108,435.15 and 42,766.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,576.43 : 108,435.15 = 42,766.44 : x
2. Step 2: Convert to fraction form
   78,576.43/108,435.15 = 42,766.44/x
3. Step 3: Cross multiply
   78,576.43x = 108,435.15 × 42,766.44
4. Step 4: Simplify right side
   78,576.43x = 4,637,385,336.37
5. Step 5: Solve for x
   x = 4,637,385,336.37/78,576.43
6. Step 6: Final answer
   x = 59,017.51