Finding the Fourth Proportional to 52,404.27, 72,318.21 and 28,530.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,404.27 : 72,318.21 = 28,530.90 : x
2. Step 2: Convert to fraction form
   52,404.27/72,318.21 = 28,530.90/x
3. Step 3: Cross multiply
   52,404.27x = 72,318.21 × 28,530.90
4. Step 4: Simplify right side
   52,404.27x = 2,063,303,617.69
5. Step 5: Solve for x
   x = 2,063,303,617.69/52,404.27
6. Step 6: Final answer
   x = 39,372.81