Finding the Fourth Proportional to 85,696.38, 118,267.83 and 63,138.42

Step by Step Solution

1. Step 1: Write the proportion equation
   85,696.38 : 118,267.83 = 63,138.42 : x
2. Step 2: Convert to fraction form
   85,696.38/118,267.83 = 63,138.42/x
3. Step 3: Cross multiply
   85,696.38x = 118,267.83 × 63,138.42
4. Step 4: Simplify right side
   85,696.38x = 7,467,243,923.03
5. Step 5: Solve for x
   x = 7,467,243,923.03/85,696.38
6. Step 6: Final answer
   x = 87,136.05