Finding the Fourth Proportional to 142,075.66, 196,053.96 and 81,646.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,075.66 : 196,053.96 = 81,646.42 : x
2. Step 2: Convert to fraction form
   142,075.66/196,053.96 = 81,646.42/x
3. Step 3: Cross multiply
   142,075.66x = 196,053.96 × 81,646.42
4. Step 4: Simplify right side
   142,075.66x = 16,007,103,960.82
5. Step 5: Solve for x
   x = 16,007,103,960.82/142,075.66
6. Step 6: Final answer
   x = 112,666.05