Finding the Fourth Proportional to 216,663.78, 298,987.16 and 126,022.34

Step by Step Solution

1. Step 1: Write the proportion equation
   216,663.78 : 298,987.16 = 126,022.34 : x
2. Step 2: Convert to fraction form
   216,663.78/298,987.16 = 126,022.34/x
3. Step 3: Cross multiply
   216,663.78x = 298,987.16 × 126,022.34
4. Step 4: Simplify right side
   216,663.78x = 37,679,061,533.15
5. Step 5: Solve for x
   x = 37,679,061,533.15/216,663.78
6. Step 6: Final answer
   x = 173,905.68