Finding the Fourth Proportional to 72,360.69, 108,354.10 and 49,940.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,360.69 : 108,354.10 = 49,940.55 : x
2. Step 2: Convert to fraction form
   72,360.69/108,354.10 = 49,940.55/x
3. Step 3: Cross multiply
   72,360.69x = 108,354.10 × 49,940.55
4. Step 4: Simplify right side
   72,360.69x = 5,411,262,557.28
5. Step 5: Solve for x
   x = 5,411,262,557.28/72,360.69
6. Step 6: Final answer
   x = 74,781.80