Finding the Fourth Proportional to 140,978.04, 194,552.22 and 77,315.28

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.04 : 194,552.22 = 77,315.28 : x
2. Step 2: Convert to fraction form
   140,978.04/194,552.22 = 77,315.28/x
3. Step 3: Cross multiply
   140,978.04x = 194,552.22 × 77,315.28
4. Step 4: Simplify right side
   140,978.04x = 15,041,859,363.92
5. Step 5: Solve for x
   x = 15,041,859,363.92/140,978.04
6. Step 6: Final answer
   x = 106,696.47