Finding the Fourth Proportional to 140,820.56, 194,393.24 and 84,221

Step by Step Solution

1. Step 1: Write the proportion equation
   140,820.56 : 194,393.24 = 84,221 : x
2. Step 2: Convert to fraction form
   140,820.56/194,393.24 = 84,221/x
3. Step 3: Cross multiply
   140,820.56x = 194,393.24 × 84,221
4. Step 4: Simplify right side
   140,820.56x = 16,371,993,066.04
5. Step 5: Solve for x
   x = 16,371,993,066.04/140,820.56
6. Step 6: Final answer
   x = 116,261.38