Finding the Fourth Proportional to 52,910.27, 79,364.53 and 21,319.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,910.27 : 79,364.53 = 21,319.56 : x
2. Step 2: Convert to fraction form
   52,910.27/79,364.53 = 21,319.56/x
3. Step 3: Cross multiply
   52,910.27x = 79,364.53 × 21,319.56
4. Step 4: Simplify right side
   52,910.27x = 1,692,016,885.86
5. Step 5: Solve for x
   x = 1,692,016,885.86/52,910.27
6. Step 6: Final answer
   x = 31,978.99