Finding the Fourth Proportional to 85,641.20, 118,168.98 and 49,818.14

Step by Step Solution

1. Step 1: Write the proportion equation
   85,641.20 : 118,168.98 = 49,818.14 : x
2. Step 2: Convert to fraction form
   85,641.20/118,168.98 = 49,818.14/x
3. Step 3: Cross multiply
   85,641.20x = 118,168.98 × 49,818.14
4. Step 4: Simplify right side
   85,641.20x = 5,886,958,789.30
5. Step 5: Solve for x
   x = 5,886,958,789.30/85,641.20
6. Step 6: Final answer
   x = 68,739.80