Finding the Fourth Proportional to 140,642.05, 194,084.38 and 76,109.79

Step by Step Solution

1. Step 1: Write the proportion equation
   140,642.05 : 194,084.38 = 76,109.79 : x
2. Step 2: Convert to fraction form
   140,642.05/194,084.38 = 76,109.79/x
3. Step 3: Cross multiply
   140,642.05x = 194,084.38 × 76,109.79
4. Step 4: Simplify right side
   140,642.05x = 14,771,721,404.08
5. Step 5: Solve for x
   x = 14,771,721,404.08/140,642.05
6. Step 6: Final answer
   x = 105,030.62