Finding the Fourth Proportional to 216,116.52, 298,215.72 and 120,619.98

Step by Step Solution

1. Step 1: Write the proportion equation
   216,116.52 : 298,215.72 = 120,619.98 : x
2. Step 2: Convert to fraction form
   216,116.52/298,215.72 = 120,619.98/x
3. Step 3: Cross multiply
   216,116.52x = 298,215.72 × 120,619.98
4. Step 4: Simplify right side
   216,116.52x = 35,970,774,182.09
5. Step 5: Solve for x
   x = 35,970,774,182.09/216,116.52
6. Step 6: Final answer
   x = 166,441.58