Finding the Fourth Proportional to 52,215.47, 78,204.34 and 40,900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,215.47 : 78,204.34 = 40,900.18 : x
2. Step 2: Convert to fraction form
   52,215.47/78,204.34 = 40,900.18/x
3. Step 3: Cross multiply
   52,215.47x = 78,204.34 × 40,900.18
4. Step 4: Simplify right side
   52,215.47x = 3,198,571,582.78
5. Step 5: Solve for x
   x = 3,198,571,582.78/52,215.47
6. Step 6: Final answer
   x = 61,257.16