Finding the Fourth Proportional to 52,855.48, 72,949.86 and 40,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,855.48 : 72,949.86 = 40,150.72 : x
2. Step 2: Convert to fraction form
   52,855.48/72,949.86 = 40,150.72/x
3. Step 3: Cross multiply
   52,855.48x = 72,949.86 × 40,150.72
4. Step 4: Simplify right side
   52,855.48x = 2,928,989,402.90
5. Step 5: Solve for x
   x = 2,928,989,402.90/52,855.48
6. Step 6: Final answer
   x = 55,415.06