Finding the Fourth Proportional to 306,598.72, 423,106.24 and 172,462.72

Step by Step Solution

1. Step 1: Write the proportion equation
   306,598.72 : 423,106.24 = 172,462.72 : x
2. Step 2: Convert to fraction form
   306,598.72/423,106.24 = 172,462.72/x
3. Step 3: Cross multiply
   306,598.72x = 423,106.24 × 172,462.72
4. Step 4: Simplify right side
   306,598.72x = 72,970,052,999.37
5. Step 5: Solve for x
   x = 72,970,052,999.37/306,598.72
6. Step 6: Final answer
   x = 237,998.56