Finding the Fourth Proportional to 215,667.74, 323,501.95 and 215,356.32

Step by Step Solution

1. Step 1: Write the proportion equation
   215,667.74 : 323,501.95 = 215,356.32 : x
2. Step 2: Convert to fraction form
   215,667.74/323,501.95 = 215,356.32/x
3. Step 3: Cross multiply
   215,667.74x = 323,501.95 × 215,356.32
4. Step 4: Simplify right side
   215,667.74x = 69,668,189,734.02
5. Step 5: Solve for x
   x = 69,668,189,734.02/215,667.74
6. Step 6: Final answer
   x = 323,034.82