Finding the Fourth Proportional to 140,910.45, 194,456.40 and 77,248.69

Step by Step Solution

1. Step 1: Write the proportion equation
   140,910.45 : 194,456.40 = 77,248.69 : x
2. Step 2: Convert to fraction form
   140,910.45/194,456.40 = 77,248.69/x
3. Step 3: Cross multiply
   140,910.45x = 194,456.40 × 77,248.69
4. Step 4: Simplify right side
   140,910.45x = 15,021,502,162.12
5. Step 5: Solve for x
   x = 15,021,502,162.12/140,910.45
6. Step 6: Final answer
   x = 106,603.18