Finding the Fourth Proportional to 142,049.78, 196,062.25 and 81,655.46

Step by Step Solution

1. Step 1: Write the proportion equation
   142,049.78 : 196,062.25 = 81,655.46 : x
2. Step 2: Convert to fraction form
   142,049.78/196,062.25 = 81,655.46/x
3. Step 3: Cross multiply
   142,049.78x = 196,062.25 × 81,655.46
4. Step 4: Simplify right side
   142,049.78x = 16,009,553,498.40
5. Step 5: Solve for x
   x = 16,009,553,498.40/142,049.78
6. Step 6: Final answer
   x = 112,703.82