Finding the Fourth Proportional to 128,766.42, 193,121.46 and 65,519.46

Step by Step Solution

1. Step 1: Write the proportion equation
   128,766.42 : 193,121.46 = 65,519.46 : x
2. Step 2: Convert to fraction form
   128,766.42/193,121.46 = 65,519.46/x
3. Step 3: Cross multiply
   128,766.42x = 193,121.46 × 65,519.46
4. Step 4: Simplify right side
   128,766.42x = 12,653,213,773.61
5. Step 5: Solve for x
   x = 12,653,213,773.61/128,766.42
6. Step 6: Final answer
   x = 98,264.86