Finding the Fourth Proportional to 172,429.56, 237,952.74 and 96,978

Step by Step Solution

1. Step 1: Write the proportion equation
   172,429.56 : 237,952.74 = 96,978 : x
2. Step 2: Convert to fraction form
   172,429.56/237,952.74 = 96,978/x
3. Step 3: Cross multiply
   172,429.56x = 237,952.74 × 96,978
4. Step 4: Simplify right side
   172,429.56x = 23,076,180,819.72
5. Step 5: Solve for x
   x = 23,076,180,819.72/172,429.56
6. Step 6: Final answer
   x = 133,829.61