Finding the Fourth Proportional to 238,567.98, 357,629.49 and 80,686.56

Step by Step Solution

1. Step 1: Write the proportion equation
   238,567.98 : 357,629.49 = 80,686.56 : x
2. Step 2: Convert to fraction form
   238,567.98/357,629.49 = 80,686.56/x
3. Step 3: Cross multiply
   238,567.98x = 357,629.49 × 80,686.56
4. Step 4: Simplify right side
   238,567.98x = 28,855,893,302.65
5. Step 5: Solve for x
   x = 28,855,893,302.65/238,567.98
6. Step 6: Final answer
   x = 120,954.59