Finding the Fourth Proportional to 139,565.22, 192,595.86 and 79,141.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,565.22 : 192,595.86 = 79,141.38 : x
2. Step 2: Convert to fraction form
   139,565.22/192,595.86 = 79,141.38/x
3. Step 3: Cross multiply
   139,565.22x = 192,595.86 × 79,141.38
4. Step 4: Simplify right side
   139,565.22x = 15,242,302,142.69
5. Step 5: Solve for x
   x = 15,242,302,142.69/139,565.22
6. Step 6: Final answer
   x = 109,212.75