Finding the Fourth Proportional to 172,362.72, 237,780.72 and 100,745.76

Step by Step Solution

1. Step 1: Write the proportion equation
   172,362.72 : 237,780.72 = 100,745.76 : x
2. Step 2: Convert to fraction form
   172,362.72/237,780.72 = 100,745.76/x
3. Step 3: Cross multiply
   172,362.72x = 237,780.72 × 100,745.76
4. Step 4: Simplify right side
   172,362.72x = 23,955,399,349.75
5. Step 5: Solve for x
   x = 23,955,399,349.75/172,362.72
6. Step 6: Final answer
   x = 138,982.49