Finding the Fourth Proportional to 85,729.52, 118,296.59 and 49,430.59

Step by Step Solution

1. Step 1: Write the proportion equation
   85,729.52 : 118,296.59 = 49,430.59 : x
2. Step 2: Convert to fraction form
   85,729.52/118,296.59 = 49,430.59/x
3. Step 3: Cross multiply
   85,729.52x = 118,296.59 × 49,430.59
4. Step 4: Simplify right side
   85,729.52x = 5,847,469,695.79
5. Step 5: Solve for x
   x = 5,847,469,695.79/85,729.52
6. Step 6: Final answer
   x = 68,208.35