Finding the Fourth Proportional to 52,780.05, 72,833.75 and 28,902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,780.05 : 72,833.75 = 28,902.10 : x
2. Step 2: Convert to fraction form
   52,780.05/72,833.75 = 28,902.10/x
3. Step 3: Cross multiply
   52,780.05x = 72,833.75 × 28,902.10
4. Step 4: Simplify right side
   52,780.05x = 2,105,048,181.36
5. Step 5: Solve for x
   x = 2,105,048,181.36/52,780.05
6. Step 6: Final answer
   x = 39,883.41