Finding the Fourth Proportional to 165,404.10, 248,138.55 and 70,634.10

Step by Step Solution

1. Step 1: Write the proportion equation
   165,404.10 : 248,138.55 = 70,634.10 : x
2. Step 2: Convert to fraction form
   165,404.10/248,138.55 = 70,634.10/x
3. Step 3: Cross multiply
   165,404.10x = 248,138.55 × 70,634.10
4. Step 4: Simplify right side
   165,404.10x = 17,527,043,154.56
5. Step 5: Solve for x
   x = 17,527,043,154.56/165,404.10
6. Step 6: Final answer
   x = 105,964.99