Finding the Fourth Proportional to 139,235.18, 192,144.72 and 75,573

Step by Step Solution

1. Step 1: Write the proportion equation
   139,235.18 : 192,144.72 = 75,573 : x
2. Step 2: Convert to fraction form
   139,235.18/192,144.72 = 75,573/x
3. Step 3: Cross multiply
   139,235.18x = 192,144.72 × 75,573
4. Step 4: Simplify right side
   139,235.18x = 14,520,952,924.56
5. Step 5: Solve for x
   x = 14,520,952,924.56/139,235.18
6. Step 6: Final answer
   x = 104,290.83