Finding the Fourth Proportional to 103,684.10, 155,398.15 and 70,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,684.10 : 155,398.15 = 70,404.10 : x
2. Step 2: Convert to fraction form
   103,684.10/155,398.15 = 70,404.10/x
3. Step 3: Cross multiply
   103,684.10x = 155,398.15 × 70,404.10
4. Step 4: Simplify right side
   103,684.10x = 10,940,666,892.42
5. Step 5: Solve for x
   x = 10,940,666,892.42/103,684.10
6. Step 6: Final answer
   x = 105,519.23