Finding the Fourth Proportional to 221,638.52, 332,457.80 and 55,426.52

Step by Step Solution

1. Step 1: Write the proportion equation
   221,638.52 : 332,457.80 = 55,426.52 : x
2. Step 2: Convert to fraction form
   221,638.52/332,457.80 = 55,426.52/x
3. Step 3: Cross multiply
   221,638.52x = 332,457.80 × 55,426.52
4. Step 4: Simplify right side
   221,638.52x = 18,426,978,900.86
5. Step 5: Solve for x
   x = 18,426,978,900.86/221,638.52
6. Step 6: Final answer
   x = 83,139.79