Finding the Fourth Proportional to 71,667.56, 99,002.36 and 57,422

Step by Step Solution

1. Step 1: Write the proportion equation
   71,667.56 : 99,002.36 = 57,422 : x
2. Step 2: Convert to fraction form
   71,667.56/99,002.36 = 57,422/x
3. Step 3: Cross multiply
   71,667.56x = 99,002.36 × 57,422
4. Step 4: Simplify right side
   71,667.56x = 5,684,913,515.92
5. Step 5: Solve for x
   x = 5,684,913,515.92/71,667.56
6. Step 6: Final answer
   x = 79,323.39