Finding the Fourth Proportional to 143,695.01, 215,675.56 and 72,667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   143,695.01 : 215,675.56 = 72,667.94 : x
2. Step 2: Convert to fraction form
   143,695.01/215,675.56 = 72,667.94/x
3. Step 3: Cross multiply
   143,695.01x = 215,675.56 × 72,667.94
4. Step 4: Simplify right side
   143,695.01x = 15,672,697,666.00
5. Step 5: Solve for x
   x = 15,672,697,666.00/143,695.01
6. Step 6: Final answer
   x = 109,069.18