Finding the Fourth Proportional to 142,377.71, 196,424.74 and 81,915.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,377.71 : 196,424.74 = 81,915.82 : x
2. Step 2: Convert to fraction form
   142,377.71/196,424.74 = 81,915.82/x
3. Step 3: Cross multiply
   142,377.71x = 196,424.74 × 81,915.82
4. Step 4: Simplify right side
   142,377.71x = 16,090,293,440.60
5. Step 5: Solve for x
   x = 16,090,293,440.60/142,377.71
6. Step 6: Final answer
   x = 113,011.32