Finding the Fourth Proportional to 103,567.56, 155,243.61 and 70,290.33

Step by Step Solution

1. Step 1: Write the proportion equation
   103,567.56 : 155,243.61 = 70,290.33 : x
2. Step 2: Convert to fraction form
   103,567.56/155,243.61 = 70,290.33/x
3. Step 3: Cross multiply
   103,567.56x = 155,243.61 × 70,290.33
4. Step 4: Simplify right side
   103,567.56x = 10,912,124,577.29
5. Step 5: Solve for x
   x = 10,912,124,577.29/103,567.56
6. Step 6: Final answer
   x = 105,362.38