Finding the Fourth Proportional to 103,635.30, 155,376.15 and 70,272.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,635.30 : 155,376.15 = 70,272.10 : x
2. Step 2: Convert to fraction form
   103,635.30/155,376.15 = 70,272.10/x
3. Step 3: Cross multiply
   103,635.30x = 155,376.15 × 70,272.10
4. Step 4: Simplify right side
   103,635.30x = 10,918,608,350.42
5. Step 5: Solve for x
   x = 10,918,608,350.42/103,635.30
6. Step 6: Final answer
   x = 105,356.07