Finding the Fourth Proportional to 103,768.12, 155,428.62 and 70,304.59

Step by Step Solution

1. Step 1: Write the proportion equation
   103,768.12 : 155,428.62 = 70,304.59 : x
2. Step 2: Convert to fraction form
   103,768.12/155,428.62 = 70,304.59/x
3. Step 3: Cross multiply
   103,768.12x = 155,428.62 × 70,304.59
4. Step 4: Simplify right side
   103,768.12x = 10,927,345,403.37
5. Step 5: Solve for x
   x = 10,927,345,403.37/103,768.12
6. Step 6: Final answer
   x = 105,305.42