Finding the Fourth Proportional to 53,271.29, 79,851.51 and 21,667.79

Step by Step Solution

1. Step 1: Write the proportion equation
   53,271.29 : 79,851.51 = 21,667.79 : x
2. Step 2: Convert to fraction form
   53,271.29/79,851.51 = 21,667.79/x
3. Step 3: Cross multiply
   53,271.29x = 79,851.51 × 21,667.79
4. Step 4: Simplify right side
   53,271.29x = 1,730,205,350.61
5. Step 5: Solve for x
   x = 1,730,205,350.61/53,271.29
6. Step 6: Final answer
   x = 32,479.14