Finding the Fourth Proportional to 193,002.21, 289,404.59 and 80,651.76

Step by Step Solution

1. Step 1: Write the proportion equation
   193,002.21 : 289,404.59 = 80,651.76 : x
2. Step 2: Convert to fraction form
   193,002.21/289,404.59 = 80,651.76/x
3. Step 3: Cross multiply
   193,002.21x = 289,404.59 × 80,651.76
4. Step 4: Simplify right side
   193,002.21x = 23,340,989,132.32
5. Step 5: Solve for x
   x = 23,340,989,132.32/193,002.21
6. Step 6: Final answer
   x = 120,936.38