Finding the Fourth Proportional to 143,936.32, 215,704.16 and 73,667.20

Step by Step Solution

1. Step 1: Write the proportion equation
   143,936.32 : 215,704.16 = 73,667.20 : x
2. Step 2: Convert to fraction form
   143,936.32/215,704.16 = 73,667.20/x
3. Step 3: Cross multiply
   143,936.32x = 215,704.16 × 73,667.20
4. Step 4: Simplify right side
   143,936.32x = 15,890,321,495.55
5. Step 5: Solve for x
   x = 15,890,321,495.55/143,936.32
6. Step 6: Final answer
   x = 110,398.28