Finding the Fourth Proportional to 109,099.40, 150,554.56 and 71,372.84

Step by Step Solution

1. Step 1: Write the proportion equation
   109,099.40 : 150,554.56 = 71,372.84 : x
2. Step 2: Convert to fraction form
   109,099.40/150,554.56 = 71,372.84/x
3. Step 3: Cross multiply
   109,099.40x = 150,554.56 × 71,372.84
4. Step 4: Simplify right side
   109,099.40x = 10,745,506,522.15
5. Step 5: Solve for x
   x = 10,745,506,522.15/109,099.40
6. Step 6: Final answer
   x = 98,492.81