Finding the Fourth Proportional to 82,515.42, 123,821.16 and 35,128.02

Step by Step Solution

1. Step 1: Write the proportion equation
   82,515.42 : 123,821.16 = 35,128.02 : x
2. Step 2: Convert to fraction form
   82,515.42/123,821.16 = 35,128.02/x
3. Step 3: Cross multiply
   82,515.42x = 123,821.16 × 35,128.02
4. Step 4: Simplify right side
   82,515.42x = 4,349,592,184.90
5. Step 5: Solve for x
   x = 4,349,592,184.90/82,515.42
6. Step 6: Final answer
   x = 52,712.48