Finding the Fourth Proportional to 55,487.00, 83,238.78 and 20,423.99

Step by Step Solution

1. Step 1: Write the proportion equation
   55,487.00 : 83,238.78 = 20,423.99 : x
2. Step 2: Convert to fraction form
   55,487.00/83,238.78 = 20,423.99/x
3. Step 3: Cross multiply
   55,487.00x = 83,238.78 × 20,423.99
4. Step 4: Simplify right side
   55,487.00x = 1,700,067,594.14
5. Step 5: Solve for x
   x = 1,700,067,594.14/55,487.00
6. Step 6: Final answer
   x = 30,639.03