Finding the Fourth Proportional to 139,022.75, 191,857.80 and 78,595.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,022.75 : 191,857.80 = 78,595.94 : x
2. Step 2: Convert to fraction form
   139,022.75/191,857.80 = 78,595.94/x
3. Step 3: Cross multiply
   139,022.75x = 191,857.80 × 78,595.94
4. Step 4: Simplify right side
   139,022.75x = 15,079,244,137.33
5. Step 5: Solve for x
   x = 15,079,244,137.33/139,022.75
6. Step 6: Final answer
   x = 108,466.02