Finding the Fourth Proportional to 642,109.82, 886,109.33 and 370,176.42

Step by Step Solution

1. Step 1: Write the proportion equation
   642,109.82 : 886,109.33 = 370,176.42 : x
2. Step 2: Convert to fraction form
   642,109.82/886,109.33 = 370,176.42/x
3. Step 3: Cross multiply
   642,109.82x = 886,109.33 × 370,176.42
4. Step 4: Simplify right side
   642,109.82x = 328,016,779,508.00
5. Step 5: Solve for x
   x = 328,016,779,508.00/642,109.82
6. Step 6: Final answer
   x = 510,842.18