Finding the Fourth Proportional to 85,209.59, 117,589.37 and 49,420.42

Step by Step Solution

1. Step 1: Write the proportion equation
   85,209.59 : 117,589.37 = 49,420.42 : x
2. Step 2: Convert to fraction form
   85,209.59/117,589.37 = 49,420.42/x
3. Step 3: Cross multiply
   85,209.59x = 117,589.37 × 49,420.42
4. Step 4: Simplify right side
   85,209.59x = 5,811,316,052.94
5. Step 5: Solve for x
   x = 5,811,316,052.94/85,209.59
6. Step 6: Final answer
   x = 68,200.26