Finding the Fourth Proportional to 79,346.14, 109,479 and 71,994.58

Step by Step Solution

1. Step 1: Write the proportion equation
   79,346.14 : 109,479 = 71,994.58 : x
2. Step 2: Convert to fraction form
   79,346.14/109,479 = 71,994.58/x
3. Step 3: Cross multiply
   79,346.14x = 109,479 × 71,994.58
4. Step 4: Simplify right side
   79,346.14x = 7,881,894,623.82
5. Step 5: Solve for x
   x = 7,881,894,623.82/79,346.14
6. Step 6: Final answer
   x = 99,335.58