Finding the Fourth Proportional to 70,548.21, 105,825.57 and 17,958.15

Step by Step Solution

1. Step 1: Write the proportion equation
   70,548.21 : 105,825.57 = 17,958.15 : x
2. Step 2: Convert to fraction form
   70,548.21/105,825.57 = 17,958.15/x
3. Step 3: Cross multiply
   70,548.21x = 105,825.57 × 17,958.15
4. Step 4: Simplify right side
   70,548.21x = 1,900,431,459.90
5. Step 5: Solve for x
   x = 1,900,431,459.90/70,548.21
6. Step 6: Final answer
   x = 26,938.05