Finding the Fourth Proportional to 139,060.45, 191,904.69 and 75,398.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,060.45 : 191,904.69 = 75,398.41 : x
2. Step 2: Convert to fraction form
   139,060.45/191,904.69 = 75,398.41/x
3. Step 3: Cross multiply
   139,060.45x = 191,904.69 × 75,398.41
4. Step 4: Simplify right side
   139,060.45x = 14,469,308,497.54
5. Step 5: Solve for x
   x = 14,469,308,497.54/139,060.45
6. Step 6: Final answer
   x = 104,050.49