Finding the Fourth Proportional to 72,628.86, 108,909.26 and 30,499.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,628.86 : 108,909.26 = 30,499.94 : x
2. Step 2: Convert to fraction form
   72,628.86/108,909.26 = 30,499.94/x
3. Step 3: Cross multiply
   72,628.86x = 108,909.26 × 30,499.94
4. Step 4: Simplify right side
   72,628.86x = 3,321,725,895.44
5. Step 5: Solve for x
   x = 3,321,725,895.44/72,628.86
6. Step 6: Final answer
   x = 45,735.62