Finding the Fourth Proportional to 140,905.94, 194,454.69 and 77,243.18

Step by Step Solution

1. Step 1: Write the proportion equation
   140,905.94 : 194,454.69 = 77,243.18 : x
2. Step 2: Convert to fraction form
   140,905.94/194,454.69 = 77,243.18/x
3. Step 3: Cross multiply
   140,905.94x = 194,454.69 × 77,243.18
4. Step 4: Simplify right side
   140,905.94x = 15,020,298,621.51
5. Step 5: Solve for x
   x = 15,020,298,621.51/140,905.94
6. Step 6: Final answer
   x = 106,598.05