Finding the Fourth Proportional to 143,515.95, 215,157.27 and 50,087.31

Step by Step Solution

1. Step 1: Write the proportion equation
   143,515.95 : 215,157.27 = 50,087.31 : x
2. Step 2: Convert to fraction form
   143,515.95/215,157.27 = 50,087.31/x
3. Step 3: Cross multiply
   143,515.95x = 215,157.27 × 50,087.31
4. Step 4: Simplify right side
   143,515.95x = 10,776,648,881.24
5. Step 5: Solve for x
   x = 10,776,648,881.24/143,515.95
6. Step 6: Final answer
   x = 75,090.25