Finding the Fourth Proportional to 143,572.55, 215,457.37 and 50,078.30

Step by Step Solution

1. Step 1: Write the proportion equation
   143,572.55 : 215,457.37 = 50,078.30 : x
2. Step 2: Convert to fraction form
   143,572.55/215,457.37 = 50,078.30/x
3. Step 3: Cross multiply
   143,572.55x = 215,457.37 × 50,078.30
4. Step 4: Simplify right side
   143,572.55x = 10,789,737,609.59
5. Step 5: Solve for x
   x = 10,789,737,609.59/143,572.55
6. Step 6: Final answer
   x = 75,151.82