Finding the Fourth Proportional to 139,061.46, 191,906.08 and 75,399.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,061.46 : 191,906.08 = 75,399.42 : x
2. Step 2: Convert to fraction form
   139,061.46/191,906.08 = 75,399.42/x
3. Step 3: Cross multiply
   139,061.46x = 191,906.08 × 75,399.42
4. Step 4: Simplify right side
   139,061.46x = 14,469,607,126.47
5. Step 5: Solve for x
   x = 14,469,607,126.47/139,061.46
6. Step 6: Final answer
   x = 104,051.89