Finding the Fourth Proportional to 82,640.16, 123,961.62 and 43,274.16

Step by Step Solution

1. Step 1: Write the proportion equation
   82,640.16 : 123,961.62 = 43,274.16 : x
2. Step 2: Convert to fraction form
   82,640.16/123,961.62 = 43,274.16/x
3. Step 3: Cross multiply
   82,640.16x = 123,961.62 × 43,274.16
4. Step 4: Simplify right side
   82,640.16x = 5,364,334,977.74
5. Step 5: Solve for x
   x = 5,364,334,977.74/82,640.16
6. Step 6: Final answer
   x = 64,911.96