Finding the Fourth Proportional to 141,767.88, 212,710.38 and 71,667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   141,767.88 : 212,710.38 = 71,667.72 : x
2. Step 2: Convert to fraction form
   141,767.88/212,710.38 = 71,667.72/x
3. Step 3: Cross multiply
   141,767.88x = 212,710.38 × 71,667.72
4. Step 4: Simplify right side
   141,767.88x = 15,244,467,954.93
5. Step 5: Solve for x
   x = 15,244,467,954.93/141,767.88
6. Step 6: Final answer
   x = 107,531.18