Finding the Fourth Proportional to 139,436.45, 192,422.33 and 75,774.09

Step by Step Solution

1. Step 1: Write the proportion equation
   139,436.45 : 192,422.33 = 75,774.09 : x
2. Step 2: Convert to fraction form
   139,436.45/192,422.33 = 75,774.09/x
3. Step 3: Cross multiply
   139,436.45x = 192,422.33 × 75,774.09
4. Step 4: Simplify right side
   139,436.45x = 14,580,626,951.43
5. Step 5: Solve for x
   x = 14,580,626,951.43/139,436.45
6. Step 6: Final answer
   x = 104,568.26