Finding the Fourth Proportional to 215,353.86, 323,081.91 and 67,609.86

Step by Step Solution

1. Step 1: Write the proportion equation
   215,353.86 : 323,081.91 = 67,609.86 : x
2. Step 2: Convert to fraction form
   215,353.86/323,081.91 = 67,609.86/x
3. Step 3: Cross multiply
   215,353.86x = 323,081.91 × 67,609.86
4. Step 4: Simplify right side
   215,353.86x = 21,843,522,703.63
5. Step 5: Solve for x
   x = 21,843,522,703.63/215,353.86
6. Step 6: Final answer
   x = 101,430.84