Finding the Fourth Proportional to 52,789.18, 72,846.48 and 28,915.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,789.18 : 72,846.48 = 28,915.96 : x
2. Step 2: Convert to fraction form
   52,789.18/72,846.48 = 28,915.96/x
3. Step 3: Cross multiply
   52,789.18x = 72,846.48 × 28,915.96
4. Step 4: Simplify right side
   52,789.18x = 2,106,425,901.82
5. Step 5: Solve for x
   x = 2,106,425,901.82/52,789.18
6. Step 6: Final answer
   x = 39,902.61