Finding the Fourth Proportional to 103,619.30, 155,352.15 and 70,256.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,619.30 : 155,352.15 = 70,256.10 : x
2. Step 2: Convert to fraction form
   103,619.30/155,352.15 = 70,256.10/x
3. Step 3: Cross multiply
   103,619.30x = 155,352.15 × 70,256.10
4. Step 4: Simplify right side
   103,619.30x = 10,914,436,185.62
5. Step 5: Solve for x
   x = 10,914,436,185.62/103,619.30
6. Step 6: Final answer
   x = 105,332.08