Finding the Fourth Proportional to 172,731, 238,369.50 and 97,280.76

Step by Step Solution

1. Step 1: Write the proportion equation
   172,731 : 238,369.50 = 97,280.76 : x
2. Step 2: Convert to fraction form
   172,731/238,369.50 = 97,280.76/x
3. Step 3: Cross multiply
   172,731x = 238,369.50 × 97,280.76
4. Step 4: Simplify right side
   172,731x = 23,188,766,120.82
5. Step 5: Solve for x
   x = 23,188,766,120.82/172,731
6. Step 6: Final answer
   x = 134,247.85