Finding the Fourth Proportional to 309,891.98, 465,034.59 and 132,400.34

Step by Step Solution

1. Step 1: Write the proportion equation
   309,891.98 : 465,034.59 = 132,400.34 : x
2. Step 2: Convert to fraction form
   309,891.98/465,034.59 = 132,400.34/x
3. Step 3: Cross multiply
   309,891.98x = 465,034.59 × 132,400.34
4. Step 4: Simplify right side
   309,891.98x = 61,570,737,827.76
5. Step 5: Solve for x
   x = 61,570,737,827.76/309,891.98
6. Step 6: Final answer
   x = 198,684.52