Finding the Fourth Proportional to 70,145.10, 105,217.56 and 17,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,145.10 : 105,217.56 = 17,554.50 : x
2. Step 2: Convert to fraction form
   70,145.10/105,217.56 = 17,554.50/x
3. Step 3: Cross multiply
   70,145.10x = 105,217.56 × 17,554.50
4. Step 4: Simplify right side
   70,145.10x = 1,847,041,657.02
5. Step 5: Solve for x
   x = 1,847,041,657.02/70,145.10
6. Step 6: Final answer
   x = 26,331.73