Finding the Fourth Proportional to 78,076.18, 107,745 and 42,266.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,076.18 : 107,745 = 42,266.18 : x
2. Step 2: Convert to fraction form
   78,076.18/107,745 = 42,266.18/x
3. Step 3: Cross multiply
   78,076.18x = 107,745 × 42,266.18
4. Step 4: Simplify right side
   78,076.18x = 4,553,969,025.38
5. Step 5: Solve for x
   x = 4,553,969,025.38/78,076.18
6. Step 6: Final answer
   x = 58,327.26