Finding the Fourth Proportional to 139,108.84, 191,966.82 and 79,489

Step by Step Solution

1. Step 1: Write the proportion equation
   139,108.84 : 191,966.82 = 79,489 : x
2. Step 2: Convert to fraction form
   139,108.84/191,966.82 = 79,489/x
3. Step 3: Cross multiply
   139,108.84x = 191,966.82 × 79,489
4. Step 4: Simplify right side
   139,108.84x = 15,259,250,554.98
5. Step 5: Solve for x
   x = 15,259,250,554.98/139,108.84
6. Step 6: Final answer
   x = 109,692.89