Finding the Fourth Proportional to 139,908.09, 193,067.55 and 76,244.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,908.09 : 193,067.55 = 76,244.52 : x
2. Step 2: Convert to fraction form
   139,908.09/193,067.55 = 76,244.52/x
3. Step 3: Cross multiply
   139,908.09x = 193,067.55 × 76,244.52
4. Step 4: Simplify right side
   139,908.09x = 14,720,342,677.33
5. Step 5: Solve for x
   x = 14,720,342,677.33/139,908.09
6. Step 6: Final answer
   x = 105,214.38