Finding the Fourth Proportional to 216,934.08, 299,214.72 and 199,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   216,934.08 : 299,214.72 = 199,086.72 : x
2. Step 2: Convert to fraction form
   216,934.08/299,214.72 = 199,086.72/x
3. Step 3: Cross multiply
   216,934.08x = 299,214.72 × 199,086.72
4. Step 4: Simplify right side
   216,934.08x = 59,569,677,180.52
5. Step 5: Solve for x
   x = 59,569,677,180.52/216,934.08
6. Step 6: Final answer
   x = 274,598.06