Finding the Fourth Proportional to 139,064.94, 191,907.77 and 75,401.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,064.94 : 191,907.77 = 75,401.37 : x
2. Step 2: Convert to fraction form
   139,064.94/191,907.77 = 75,401.37/x
3. Step 3: Cross multiply
   139,064.94x = 191,907.77 × 75,401.37
4. Step 4: Simplify right side
   139,064.94x = 14,470,108,394.64
5. Step 5: Solve for x
   x = 14,470,108,394.64/139,064.94
6. Step 6: Final answer
   x = 104,052.89