Finding the Fourth Proportional to 142,045.39, 196,015.98 and 81,573.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,045.39 : 196,015.98 = 81,573.40 : x
2. Step 2: Convert to fraction form
   142,045.39/196,015.98 = 81,573.40/x
3. Step 3: Cross multiply
   142,045.39x = 196,015.98 × 81,573.40
4. Step 4: Simplify right side
   142,045.39x = 15,989,689,942.93
5. Step 5: Solve for x
   x = 15,989,689,942.93/142,045.39
6. Step 6: Final answer
   x = 112,567.47