Finding the Fourth Proportional to 55,899.28, 77,111.28 and 42,448.24

Step by Step Solution

1. Step 1: Write the proportion equation
   55,899.28 : 77,111.28 = 42,448.24 : x
2. Step 2: Convert to fraction form
   55,899.28/77,111.28 = 42,448.24/x
3. Step 3: Cross multiply
   55,899.28x = 77,111.28 × 42,448.24
4. Step 4: Simplify right side
   55,899.28x = 3,273,238,120.15
5. Step 5: Solve for x
   x = 3,273,238,120.15/55,899.28
6. Step 6: Final answer
   x = 58,556.00