Finding the Fourth Proportional to 139,087.56, 191,940.88 and 75,425.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,087.56 : 191,940.88 = 75,425.34 : x
2. Step 2: Convert to fraction form
   139,087.56/191,940.88 = 75,425.34/x
3. Step 3: Cross multiply
   139,087.56x = 191,940.88 × 75,425.34
4. Step 4: Simplify right side
   139,087.56x = 14,477,206,133.90
5. Step 5: Solve for x
   x = 14,477,206,133.90/139,087.56
6. Step 6: Final answer
   x = 104,086.99