Finding the Fourth Proportional to 196,426.32, 294,807.24 and 78,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   196,426.32 : 294,807.24 = 78,180.72 : x
2. Step 2: Convert to fraction form
   196,426.32/294,807.24 = 78,180.72/x
3. Step 3: Cross multiply
   196,426.32x = 294,807.24 × 78,180.72
4. Step 4: Simplify right side
   196,426.32x = 23,048,242,284.41
5. Step 5: Solve for x
   x = 23,048,242,284.41/196,426.32
6. Step 6: Final answer
   x = 117,337.85