Finding the Fourth Proportional to 139,578.53, 192,608.89 and 75,914.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,578.53 : 192,608.89 = 75,914.96 : x
2. Step 2: Convert to fraction form
   139,578.53/192,608.89 = 75,914.96/x
3. Step 3: Cross multiply
   139,578.53x = 192,608.89 × 75,914.96
4. Step 4: Simplify right side
   139,578.53x = 14,621,895,027.16
5. Step 5: Solve for x
   x = 14,621,895,027.16/139,578.53
6. Step 6: Final answer
   x = 104,757.48