Finding the Fourth Proportional to 196,628.28, 294,961.56 and 78,271.96

Step by Step Solution

1. Step 1: Write the proportion equation
   196,628.28 : 294,961.56 = 78,271.96 : x
2. Step 2: Convert to fraction form
   196,628.28/294,961.56 = 78,271.96/x
3. Step 3: Cross multiply
   196,628.28x = 294,961.56 × 78,271.96
4. Step 4: Simplify right side
   196,628.28x = 23,087,219,425.86
5. Step 5: Solve for x
   x = 23,087,219,425.86/196,628.28
6. Step 6: Final answer
   x = 117,415.56