Finding the Fourth Proportional to 52,779.33, 72,837.23 and 28,907.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,779.33 : 72,837.23 = 28,907.31 : x
2. Step 2: Convert to fraction form
   52,779.33/72,837.23 = 28,907.31/x
3. Step 3: Cross multiply
   52,779.33x = 72,837.23 × 28,907.31
4. Step 4: Simplify right side
   52,779.33x = 2,105,528,515.75
5. Step 5: Solve for x
   x = 2,105,528,515.75/52,779.33
6. Step 6: Final answer
   x = 39,893.05