Finding the Fourth Proportional to 162,385.16, 243,411.64 and 82,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,385.16 : 243,411.64 = 82,274.72 : x
2. Step 2: Convert to fraction form
   162,385.16/243,411.64 = 82,274.72/x
3. Step 3: Cross multiply
   162,385.16x = 243,411.64 × 82,274.72
4. Step 4: Simplify right side
   162,385.16x = 20,026,624,525.74
5. Step 5: Solve for x
   x = 20,026,624,525.74/162,385.16
6. Step 6: Final answer
   x = 123,327.92