Finding the Fourth Proportional to 72,663.80, 109,065.30 and 37,628.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,663.80 : 109,065.30 = 37,628.60 : x
2. Step 2: Convert to fraction form
   72,663.80/109,065.30 = 37,628.60/x
3. Step 3: Cross multiply
   72,663.80x = 109,065.30 × 37,628.60
4. Step 4: Simplify right side
   72,663.80x = 4,103,974,547.58
5. Step 5: Solve for x
   x = 4,103,974,547.58/72,663.80
6. Step 6: Final answer
   x = 56,478.94