Finding the Fourth Proportional to 78,567.72, 108,423.26 and 42,757.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,567.72 : 108,423.26 = 42,757.73 : x
2. Step 2: Convert to fraction form
   78,567.72/108,423.26 = 42,757.73/x
3. Step 3: Cross multiply
   78,567.72x = 108,423.26 × 42,757.73
4. Step 4: Simplify right side
   78,567.72x = 4,635,931,720.89
5. Step 5: Solve for x
   x = 4,635,931,720.89/78,567.72
6. Step 6: Final answer
   x = 59,005.55