Finding the Fourth Proportional to 103,559.31, 155,231.24 and 70,282.08

Step by Step Solution

1. Step 1: Write the proportion equation
   103,559.31 : 155,231.24 = 70,282.08 : x
2. Step 2: Convert to fraction form
   103,559.31/155,231.24 = 70,282.08/x
3. Step 3: Cross multiply
   103,559.31x = 155,231.24 × 70,282.08
4. Step 4: Simplify right side
   103,559.31x = 10,909,974,076.77
5. Step 5: Solve for x
   x = 10,909,974,076.77/103,559.31
6. Step 6: Final answer
   x = 105,350.01