Finding the Fourth Proportional to 172,586.76, 258,833.82 and 72,747.72

Step by Step Solution

1. Step 1: Write the proportion equation
   172,586.76 : 258,833.82 = 72,747.72 : x
2. Step 2: Convert to fraction form
   172,586.76/258,833.82 = 72,747.72/x
3. Step 3: Cross multiply
   172,586.76x = 258,833.82 × 72,747.72
4. Step 4: Simplify right side
   172,586.76x = 18,829,570,263.89
5. Step 5: Solve for x
   x = 18,829,570,263.89/172,586.76
6. Step 6: Final answer
   x = 109,102.06