Finding the Fourth Proportional to 52,521.63, 78,761.89 and 18,318.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,521.63 : 78,761.89 = 18,318.78 : x
2. Step 2: Convert to fraction form
   52,521.63/78,761.89 = 18,318.78/x
3. Step 3: Cross multiply
   52,521.63x = 78,761.89 × 18,318.78
4. Step 4: Simplify right side
   52,521.63x = 1,442,821,735.29
5. Step 5: Solve for x
   x = 1,442,821,735.29/52,521.63
6. Step 6: Final answer
   x = 27,471.00