Finding the Fourth Proportional to 139,042.53, 191,879.96 and 75,380.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,042.53 : 191,879.96 = 75,380.48 : x
2. Step 2: Convert to fraction form
   139,042.53/191,879.96 = 75,380.48/x
3. Step 3: Cross multiply
   139,042.53x = 191,879.96 × 75,380.48
4. Step 4: Simplify right side
   139,042.53x = 14,464,002,870.43
5. Step 5: Solve for x
   x = 14,464,002,870.43/139,042.53
6. Step 6: Final answer
   x = 104,025.75