Finding the Fourth Proportional to 142,196.32, 196,229.28 and 77,665.24

Step by Step Solution

1. Step 1: Write the proportion equation
   142,196.32 : 196,229.28 = 77,665.24 : x
2. Step 2: Convert to fraction form
   142,196.32/196,229.28 = 77,665.24/x
3. Step 3: Cross multiply
   142,196.32x = 196,229.28 × 77,665.24
4. Step 4: Simplify right side
   142,196.32x = 15,240,194,126.23
5. Step 5: Solve for x
   x = 15,240,194,126.23/142,196.32
6. Step 6: Final answer
   x = 107,177.13