Finding the Fourth Proportional to 142,056.31, 196,111.41 and 103,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,056.31 : 196,111.41 = 103,772.88 : x
2. Step 2: Convert to fraction form
   142,056.31/196,111.41 = 103,772.88/x
3. Step 3: Cross multiply
   142,056.31x = 196,111.41 × 103,772.88
4. Step 4: Simplify right side
   142,056.31x = 20,351,044,317.14
5. Step 5: Solve for x
   x = 20,351,044,317.14/142,056.31
6. Step 6: Final answer
   x = 143,260.40