Finding the Fourth Proportional to 139,162.88, 192,043.05 and 75,500.21

Step by Step Solution

1. Step 1: Write the proportion equation
   139,162.88 : 192,043.05 = 75,500.21 : x
2. Step 2: Convert to fraction form
   139,162.88/192,043.05 = 75,500.21/x
3. Step 3: Cross multiply
   139,162.88x = 192,043.05 × 75,500.21
4. Step 4: Simplify right side
   139,162.88x = 14,499,290,604.04
5. Step 5: Solve for x
   x = 14,499,290,604.04/139,162.88
6. Step 6: Final answer
   x = 104,189.35