Finding the Fourth Proportional to 71,636.72, 107,427 and 42,062

Step by Step Solution

1. Step 1: Write the proportion equation
   71,636.72 : 107,427 = 42,062 : x
2. Step 2: Convert to fraction form
   71,636.72/107,427 = 42,062/x
3. Step 3: Cross multiply
   71,636.72x = 107,427 × 42,062
4. Step 4: Simplify right side
   71,636.72x = 4,518,594,474
5. Step 5: Solve for x
   x = 4,518,594,474/71,636.72
6. Step 6: Final answer
   x = 63,076.51