Finding the Fourth Proportional to 52,779.42, 72,835.62 and 28,580.39

Step by Step Solution

1. Step 1: Write the proportion equation
   52,779.42 : 72,835.62 = 28,580.39 : x
2. Step 2: Convert to fraction form
   52,779.42/72,835.62 = 28,580.39/x
3. Step 3: Cross multiply
   52,779.42x = 72,835.62 × 28,580.39
4. Step 4: Simplify right side
   52,779.42x = 2,081,670,061.31
5. Step 5: Solve for x
   x = 2,081,670,061.31/52,779.42
6. Step 6: Final answer
   x = 39,440.94