Finding the Fourth Proportional to 56,109.50, 77,432.73 and 30,960.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,109.50 : 77,432.73 = 30,960.62 : x
2. Step 2: Convert to fraction form
   56,109.50/77,432.73 = 30,960.62/x
3. Step 3: Cross multiply
   56,109.50x = 77,432.73 × 30,960.62
4. Step 4: Simplify right side
   56,109.50x = 2,397,365,329.09
5. Step 5: Solve for x
   x = 2,397,365,329.09/56,109.50
6. Step 6: Final answer
   x = 42,726.55