Finding the Fourth Proportional to 215,371.32, 323,038.50 and 131,109.62

Step by Step Solution

1. Step 1: Write the proportion equation
   215,371.32 : 323,038.50 = 131,109.62 : x
2. Step 2: Convert to fraction form
   215,371.32/323,038.50 = 131,109.62/x
3. Step 3: Cross multiply
   215,371.32x = 323,038.50 × 131,109.62
4. Step 4: Simplify right side
   215,371.32x = 42,353,453,365.18
5. Step 5: Solve for x
   x = 42,353,453,365.18/215,371.32
6. Step 6: Final answer
   x = 196,653.17