Finding the Fourth Proportional to 78,576.27, 108,437.57 and 42,768.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,576.27 : 108,437.57 = 42,768.60 : x
2. Step 2: Convert to fraction form
   78,576.27/108,437.57 = 42,768.60/x
3. Step 3: Cross multiply
   78,576.27x = 108,437.57 × 42,768.60
4. Step 4: Simplify right side
   78,576.27x = 4,637,723,056.30
5. Step 5: Solve for x
   x = 4,637,723,056.30/78,576.27
6. Step 6: Final answer
   x = 59,021.93