Finding the Fourth Proportional to 142,196.06, 196,226.80 and 78,532.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,196.06 : 196,226.80 = 78,532.48 : x
2. Step 2: Convert to fraction form
   142,196.06/196,226.80 = 78,532.48/x
3. Step 3: Cross multiply
   142,196.06x = 196,226.80 × 78,532.48
4. Step 4: Simplify right side
   142,196.06x = 15,410,177,246.46
5. Step 5: Solve for x
   x = 15,410,177,246.46/142,196.06
6. Step 6: Final answer
   x = 108,372.74