Finding the Fourth Proportional to 207,900.76, 286,976.82 and 123,017.64

Step by Step Solution

1. Step 1: Write the proportion equation
   207,900.76 : 286,976.82 = 123,017.64 : x
2. Step 2: Convert to fraction form
   207,900.76/286,976.82 = 123,017.64/x
3. Step 3: Cross multiply
   207,900.76x = 286,976.82 × 123,017.64
4. Step 4: Simplify right side
   207,900.76x = 35,303,211,131.10
5. Step 5: Solve for x
   x = 35,303,211,131.10/207,900.76
6. Step 6: Final answer
   x = 169,807.99