Finding the Fourth Proportional to 139,061.45, 191,906.07 and 75,399.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,061.45 : 191,906.07 = 75,399.41 : x
2. Step 2: Convert to fraction form
   139,061.45/191,906.07 = 75,399.41/x
3. Step 3: Cross multiply
   139,061.45x = 191,906.07 × 75,399.41
4. Step 4: Simplify right side
   139,061.45x = 14,469,604,453.42
5. Step 5: Solve for x
   x = 14,469,604,453.42/139,061.45
6. Step 6: Final answer
   x = 104,051.87