Finding the Fourth Proportional to 142,090.08, 196,078.50 and 78,427.02

Step by Step Solution

1. Step 1: Write the proportion equation
   142,090.08 : 196,078.50 = 78,427.02 : x
2. Step 2: Convert to fraction form
   142,090.08/196,078.50 = 78,427.02/x
3. Step 3: Cross multiply
   142,090.08x = 196,078.50 × 78,427.02
4. Step 4: Simplify right side
   142,090.08x = 15,377,852,441.07
5. Step 5: Solve for x
   x = 15,377,852,441.07/142,090.08
6. Step 6: Final answer
   x = 108,226.08