Finding the Fourth Proportional to 196,300.03, 293,868.78 and 121,178.63

Step by Step Solution

1. Step 1: Write the proportion equation
   196,300.03 : 293,868.78 = 121,178.63 : x
2. Step 2: Convert to fraction form
   196,300.03/293,868.78 = 121,178.63/x
3. Step 3: Cross multiply
   196,300.03x = 293,868.78 × 121,178.63
4. Step 4: Simplify right side
   196,300.03x = 35,610,615,338.42
5. Step 5: Solve for x
   x = 35,610,615,338.42/196,300.03
6. Step 6: Final answer
   x = 181,409.12