Finding the Fourth Proportional to 52,262.16, 72,122.31 and 28,389.30

Step by Step Solution

1. Step 1: Write the proportion equation
   52,262.16 : 72,122.31 = 28,389.30 : x
2. Step 2: Convert to fraction form
   52,262.16/72,122.31 = 28,389.30/x
3. Step 3: Cross multiply
   52,262.16x = 72,122.31 × 28,389.30
4. Step 4: Simplify right side
   52,262.16x = 2,047,501,895.28
5. Step 5: Solve for x
   x = 2,047,501,895.28/52,262.16
6. Step 6: Final answer
   x = 39,177.52