Finding the Fourth Proportional to 72,770.78, 108,953.72 and 37,155.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,770.78 : 108,953.72 = 37,155.18 : x
2. Step 2: Convert to fraction form
   72,770.78/108,953.72 = 37,155.18/x
3. Step 3: Cross multiply
   72,770.78x = 108,953.72 × 37,155.18
4. Step 4: Simplify right side
   72,770.78x = 4,048,195,078.27
5. Step 5: Solve for x
   x = 4,048,195,078.27/72,770.78
6. Step 6: Final answer
   x = 55,629.40