Finding the Fourth Proportional to 143,808.56, 215,810.08 and 50,315.12

Step by Step Solution

1. Step 1: Write the proportion equation
   143,808.56 : 215,810.08 = 50,315.12 : x
2. Step 2: Convert to fraction form
   143,808.56/215,810.08 = 50,315.12/x
3. Step 3: Cross multiply
   143,808.56x = 215,810.08 × 50,315.12
4. Step 4: Simplify right side
   143,808.56x = 10,858,510,072.41
5. Step 5: Solve for x
   x = 10,858,510,072.41/143,808.56
6. Step 6: Final answer
   x = 75,506.70