Finding the Fourth Proportional to 146,404.72, 219,659.76 and 57,609.04

Step by Step Solution

1. Step 1: Write the proportion equation
   146,404.72 : 219,659.76 = 57,609.04 : x
2. Step 2: Convert to fraction form
   146,404.72/219,659.76 = 57,609.04/x
3. Step 3: Cross multiply
   146,404.72x = 219,659.76 × 57,609.04
4. Step 4: Simplify right side
   146,404.72x = 12,654,387,900.23
5. Step 5: Solve for x
   x = 12,654,387,900.23/146,404.72
6. Step 6: Final answer
   x = 86,434.29