Finding the Fourth Proportional to 56,584.77, 78,086.67 and 30,743.10

Step by Step Solution

1. Step 1: Write the proportion equation
   56,584.77 : 78,086.67 = 30,743.10 : x
2. Step 2: Convert to fraction form
   56,584.77/78,086.67 = 30,743.10/x
3. Step 3: Cross multiply
   56,584.77x = 78,086.67 × 30,743.10
4. Step 4: Simplify right side
   56,584.77x = 2,400,626,304.48
5. Step 5: Solve for x
   x = 2,400,626,304.48/56,584.77
6. Step 6: Final answer
   x = 42,425.31