Finding the Fourth Proportional to 140,978.32, 194,560.38 and 80,547.67

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.32 : 194,560.38 = 80,547.67 : x
2. Step 2: Convert to fraction form
   140,978.32/194,560.38 = 80,547.67/x
3. Step 3: Cross multiply
   140,978.32x = 194,560.38 × 80,547.67
4. Step 4: Simplify right side
   140,978.32x = 15,671,384,796.91
5. Step 5: Solve for x
   x = 15,671,384,796.91/140,978.32
6. Step 6: Final answer
   x = 111,161.67