Finding the Fourth Proportional to 89,136.85, 123,012.27 and 50,902.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89,136.85 : 123,012.27 = 50,902.63 : x
2. Step 2: Convert to fraction form
   89,136.85/123,012.27 = 50,902.63/x
3. Step 3: Cross multiply
   89,136.85x = 123,012.27 × 50,902.63
4. Step 4: Simplify right side
   89,136.85x = 6,261,648,065.27
5. Step 5: Solve for x
   x = 6,261,648,065.27/89,136.85
6. Step 6: Final answer
   x = 70,247.58