Finding the Fourth Proportional to 139,105.94, 191,964.30 and 75,442.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,105.94 : 191,964.30 = 75,442.46 : x
2. Step 2: Convert to fraction form
   139,105.94/191,964.30 = 75,442.46/x
3. Step 3: Cross multiply
   139,105.94x = 191,964.30 × 75,442.46
4. Step 4: Simplify right side
   139,105.94x = 14,482,259,024.18
5. Step 5: Solve for x
   x = 14,482,259,024.18/139,105.94
6. Step 6: Final answer
   x = 104,109.57