Finding the Fourth Proportional to 139,229.48, 192,136.89 and 75,567.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,229.48 : 192,136.89 = 75,567.30 : x
2. Step 2: Convert to fraction form
   139,229.48/192,136.89 = 75,567.30/x
3. Step 3: Cross multiply
   139,229.48x = 192,136.89 × 75,567.30
4. Step 4: Simplify right side
   139,229.48x = 14,519,265,570.56
5. Step 5: Solve for x
   x = 14,519,265,570.56/139,229.48
6. Step 6: Final answer
   x = 104,282.98