Finding the Fourth Proportional to 205,929.42, 308,574.18 and 99,198.42

Step by Step Solution

1. Step 1: Write the proportion equation
   205,929.42 : 308,574.18 = 99,198.42 : x
2. Step 2: Convert to fraction form
   205,929.42/308,574.18 = 99,198.42/x
3. Step 3: Cross multiply
   205,929.42x = 308,574.18 × 99,198.42
4. Step 4: Simplify right side
   205,929.42x = 30,610,071,108.80
5. Step 5: Solve for x
   x = 30,610,071,108.80/205,929.42
6. Step 6: Final answer
   x = 148,643.51