Finding the Fourth Proportional to 56,111.07, 77,433.27 and 30,960.57

Step by Step Solution

1. Step 1: Write the proportion equation
   56,111.07 : 77,433.27 = 30,960.57 : x
2. Step 2: Convert to fraction form
   56,111.07/77,433.27 = 30,960.57/x
3. Step 3: Cross multiply
   56,111.07x = 77,433.27 × 30,960.57
4. Step 4: Simplify right side
   56,111.07x = 2,397,378,176.16
5. Step 5: Solve for x
   x = 2,397,378,176.16/56,111.07
6. Step 6: Final answer
   x = 42,725.58