Finding the Fourth Proportional to 52,828.56, 72,909.42 and 30,170.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,828.56 : 72,909.42 = 30,170.79 : x
2. Step 2: Convert to fraction form
   52,828.56/72,909.42 = 30,170.79/x
3. Step 3: Cross multiply
   52,828.56x = 72,909.42 × 30,170.79
4. Step 4: Simplify right side
   52,828.56x = 2,199,734,799.84
5. Step 5: Solve for x
   x = 2,199,734,799.84/52,828.56
6. Step 6: Final answer
   x = 41,639.12