Finding the Fourth Proportional to 139,592.37, 192,745.59 and 107,275.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,592.37 : 192,745.59 = 107,275.80 : x
2. Step 2: Convert to fraction form
   139,592.37/192,745.59 = 107,275.80/x
3. Step 3: Cross multiply
   139,592.37x = 192,745.59 × 107,275.80
4. Step 4: Simplify right side
   139,592.37x = 20,676,937,363.72
5. Step 5: Solve for x
   x = 20,676,937,363.72/139,592.37
6. Step 6: Final answer
   x = 148,123.69