Finding the Fourth Proportional to 172,688.50, 259,047.42 and 48,029.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,688.50 : 259,047.42 = 48,029.50 : x
2. Step 2: Convert to fraction form
   172,688.50/259,047.42 = 48,029.50/x
3. Step 3: Cross multiply
   172,688.50x = 259,047.42 × 48,029.50
4. Step 4: Simplify right side
   172,688.50x = 12,441,918,058.89
5. Step 5: Solve for x
   x = 12,441,918,058.89/172,688.50
6. Step 6: Final answer
   x = 72,048.33