Finding the Fourth Proportional to 139,042.98, 191,880.63 and 75,380.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,042.98 : 191,880.63 = 75,380.49 : x
2. Step 2: Convert to fraction form
   139,042.98/191,880.63 = 75,380.49/x
3. Step 3: Cross multiply
   139,042.98x = 191,880.63 × 75,380.49
4. Step 4: Simplify right side
   139,042.98x = 14,464,055,910.91
5. Step 5: Solve for x
   x = 14,464,055,910.91/139,042.98
6. Step 6: Final answer
   x = 104,025.79