Finding the Fourth Proportional to 123,812.52, 170,900.12 and 79,100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,812.52 : 170,900.12 = 79,100.52 : x
2. Step 2: Convert to fraction form
   123,812.52/170,900.12 = 79,100.52/x
3. Step 3: Cross multiply
   123,812.52x = 170,900.12 × 79,100.52
4. Step 4: Simplify right side
   123,812.52x = 13,518,288,360.06
5. Step 5: Solve for x
   x = 13,518,288,360.06/123,812.52
6. Step 6: Final answer
   x = 109,183.53