Finding the Fourth Proportional to 767,196.66, 1,150,461.50 and 219,968.57

Step by Step Solution

1. Step 1: Write the proportion equation
   767,196.66 : 1,150,461.50 = 219,968.57 : x
2. Step 2: Convert to fraction form
   767,196.66/1,150,461.50 = 219,968.57/x
3. Step 3: Cross multiply
   767,196.66x = 1,150,461.50 × 219,968.57
4. Step 4: Simplify right side
   767,196.66x = 253,065,364,142.91
5. Step 5: Solve for x
   x = 253,065,364,142.91/767,196.66
6. Step 6: Final answer
   x = 329,857.23