Finding the Fourth Proportional to 172,630.32, 258,841.76 and 67,498.80

Step by Step Solution

1. Step 1: Write the proportion equation
   172,630.32 : 258,841.76 = 67,498.80 : x
2. Step 2: Convert to fraction form
   172,630.32/258,841.76 = 67,498.80/x
3. Step 3: Cross multiply
   172,630.32x = 258,841.76 × 67,498.80
4. Step 4: Simplify right side
   172,630.32x = 17,471,508,189.89
5. Step 5: Solve for x
   x = 17,471,508,189.89/172,630.32
6. Step 6: Final answer
   x = 101,207.65