Finding the Fourth Proportional to 172,636.42, 258,686.04 and 65,962.21

Step by Step Solution

1. Step 1: Write the proportion equation
   172,636.42 : 258,686.04 = 65,962.21 : x
2. Step 2: Convert to fraction form
   172,636.42/258,686.04 = 65,962.21/x
3. Step 3: Cross multiply
   172,636.42x = 258,686.04 × 65,962.21
4. Step 4: Simplify right side
   172,636.42x = 17,063,502,894.55
5. Step 5: Solve for x
   x = 17,063,502,894.55/172,636.42
6. Step 6: Final answer
   x = 98,840.69