Finding the Fourth Proportional to 55,860.32, 77,087.76 and 30,710

Step by Step Solution

1. Step 1: Write the proportion equation
   55,860.32 : 77,087.76 = 30,710 : x
2. Step 2: Convert to fraction form
   55,860.32/77,087.76 = 30,710/x
3. Step 3: Cross multiply
   55,860.32x = 77,087.76 × 30,710
4. Step 4: Simplify right side
   55,860.32x = 2,367,365,109.60
5. Step 5: Solve for x
   x = 2,367,365,109.60/55,860.32
6. Step 6: Final answer
   x = 42,380.08