Finding the Fourth Proportional to 139,059.45, 191,903.31 and 75,397.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,059.45 : 191,903.31 = 75,397.41 : x
2. Step 2: Convert to fraction form
   139,059.45/191,903.31 = 75,397.41/x
3. Step 3: Cross multiply
   139,059.45x = 191,903.31 × 75,397.41
4. Step 4: Simplify right side
   139,059.45x = 14,469,012,544.43
5. Step 5: Solve for x
   x = 14,469,012,544.43/139,059.45
6. Step 6: Final answer
   x = 104,049.11