Finding the Fourth Proportional to 51,499.31, 76,862.84 and 48,136.31

Step by Step Solution

1. Step 1: Write the proportion equation
   51,499.31 : 76,862.84 = 48,136.31 : x
2. Step 2: Convert to fraction form
   51,499.31/76,862.84 = 48,136.31/x
3. Step 3: Cross multiply
   51,499.31x = 76,862.84 × 48,136.31
4. Step 4: Simplify right side
   51,499.31x = 3,699,893,229.75
5. Step 5: Solve for x
   x = 3,699,893,229.75/51,499.31
6. Step 6: Final answer
   x = 71,843.56