Finding the Fourth Proportional to 52,856.53, 72,942.32 and 28,657.67

Step by Step Solution

1. Step 1: Write the proportion equation
   52,856.53 : 72,942.32 = 28,657.67 : x
2. Step 2: Convert to fraction form
   52,856.53/72,942.32 = 28,657.67/x
3. Step 3: Cross multiply
   52,856.53x = 72,942.32 × 28,657.67
4. Step 4: Simplify right side
   52,856.53x = 2,090,356,974.66
5. Step 5: Solve for x
   x = 2,090,356,974.66/52,856.53
6. Step 6: Final answer
   x = 39,547.75