Finding the Fourth Proportional to 78,043.27, 107,700.49 and 42,234.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,043.27 : 107,700.49 = 42,234.05 : x
2. Step 2: Convert to fraction form
   78,043.27/107,700.49 = 42,234.05/x
3. Step 3: Cross multiply
   78,043.27x = 107,700.49 × 42,234.05
4. Step 4: Simplify right side
   78,043.27x = 4,548,627,130.01
5. Step 5: Solve for x
   x = 4,548,627,130.01/78,043.27
6. Step 6: Final answer
   x = 58,283.40