Finding the Fourth Proportional to 418,667.89, 628,000.47 and 115,062.48

Step by Step Solution

1. Step 1: Write the proportion equation
   418,667.89 : 628,000.47 = 115,062.48 : x
2. Step 2: Convert to fraction form
   418,667.89/628,000.47 = 115,062.48/x
3. Step 3: Cross multiply
   418,667.89x = 628,000.47 × 115,062.48
4. Step 4: Simplify right side
   418,667.89x = 72,259,291,519.37
5. Step 5: Solve for x
   x = 72,259,291,519.37/418,667.89
6. Step 6: Final answer
   x = 172,593.34