Finding the Fourth Proportional to 142,892.84, 197,191.78 and 79,229

Step by Step Solution

1. Step 1: Write the proportion equation
   142,892.84 : 197,191.78 = 79,229 : x
2. Step 2: Convert to fraction form
   142,892.84/197,191.78 = 79,229/x
3. Step 3: Cross multiply
   142,892.84x = 197,191.78 × 79,229
4. Step 4: Simplify right side
   142,892.84x = 15,623,307,537.62
5. Step 5: Solve for x
   x = 15,623,307,537.62/142,892.84
6. Step 6: Final answer
   x = 109,335.83