Finding the Fourth Proportional to 172,164.84, 258,640.86 and 165,087.72

Step by Step Solution

1. Step 1: Write the proportion equation
   172,164.84 : 258,640.86 = 165,087.72 : x
2. Step 2: Convert to fraction form
   172,164.84/258,640.86 = 165,087.72/x
3. Step 3: Cross multiply
   172,164.84x = 258,640.86 × 165,087.72
4. Step 4: Simplify right side
   172,164.84x = 42,698,429,876.24
5. Step 5: Solve for x
   x = 42,698,429,876.24/172,164.84
6. Step 6: Final answer
   x = 248,009.00