Finding the Fourth Proportional to 56,300.39, 77,693.33 and 30,806.65

Step by Step Solution

1. Step 1: Write the proportion equation
   56,300.39 : 77,693.33 = 30,806.65 : x
2. Step 2: Convert to fraction form
   56,300.39/77,693.33 = 30,806.65/x
3. Step 3: Cross multiply
   56,300.39x = 77,693.33 × 30,806.65
4. Step 4: Simplify right side
   56,300.39x = 2,393,471,107.43
5. Step 5: Solve for x
   x = 2,393,471,107.43/56,300.39
6. Step 6: Final answer
   x = 42,512.52