Finding the Fourth Proportional to 142,093.72, 196,086.37 and 77,564.23

Step by Step Solution

1. Step 1: Write the proportion equation
   142,093.72 : 196,086.37 = 77,564.23 : x
2. Step 2: Convert to fraction form
   142,093.72/196,086.37 = 77,564.23/x
3. Step 3: Cross multiply
   142,093.72x = 196,086.37 × 77,564.23
4. Step 4: Simplify right side
   142,093.72x = 15,209,288,866.84
5. Step 5: Solve for x
   x = 15,209,288,866.84/142,093.72
6. Step 6: Final answer
   x = 107,037.02