Finding the Fourth Proportional to 52,431.40, 72,355.86 and 28,558.24

Step by Step Solution

1. Step 1: Write the proportion equation
   52,431.40 : 72,355.86 = 28,558.24 : x
2. Step 2: Convert to fraction form
   52,431.40/72,355.86 = 28,558.24/x
3. Step 3: Cross multiply
   52,431.40x = 72,355.86 × 28,558.24
4. Step 4: Simplify right side
   52,431.40x = 2,066,356,015.29
5. Step 5: Solve for x
   x = 2,066,356,015.29/52,431.40
6. Step 6: Final answer
   x = 39,410.66