Finding the Fourth Proportional to 73,028.72, 100,779.60 and 39,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,028.72 : 100,779.60 = 39,494.72 : x
2. Step 2: Convert to fraction form
   73,028.72/100,779.60 = 39,494.72/x
3. Step 3: Cross multiply
   73,028.72x = 100,779.60 × 39,494.72
4. Step 4: Simplify right side
   73,028.72x = 3,980,262,083.71
5. Step 5: Solve for x
   x = 3,980,262,083.71/73,028.72
6. Step 6: Final answer
   x = 54,502.70