Finding the Fourth Proportional to 72,557.69, 100,129.61 and 40,736.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,557.69 : 100,129.61 = 40,736.84 : x
2. Step 2: Convert to fraction form
   72,557.69/100,129.61 = 40,736.84/x
3. Step 3: Cross multiply
   72,557.69x = 100,129.61 × 40,736.84
4. Step 4: Simplify right side
   72,557.69x = 4,078,963,503.03
5. Step 5: Solve for x
   x = 4,078,963,503.03/72,557.69
6. Step 6: Final answer
   x = 56,216.84