Finding the Fourth Proportional to 139,445.30, 192,427.14 and 79,016.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,445.30 : 192,427.14 = 79,016.67 : x
2. Step 2: Convert to fraction form
   139,445.30/192,427.14 = 79,016.67/x
3. Step 3: Cross multiply
   139,445.30x = 192,427.14 × 79,016.67
4. Step 4: Simplify right side
   139,445.30x = 15,204,951,820.42
5. Step 5: Solve for x
   x = 15,204,951,820.42/139,445.30
6. Step 6: Final answer
   x = 109,038.83