Finding the Fourth Proportional to 82,487.07, 123,509.18 and 42,961.16

Step by Step Solution

1. Step 1: Write the proportion equation
   82,487.07 : 123,509.18 = 42,961.16 : x
2. Step 2: Convert to fraction form
   82,487.07/123,509.18 = 42,961.16/x
3. Step 3: Cross multiply
   82,487.07x = 123,509.18 × 42,961.16
4. Step 4: Simplify right side
   82,487.07x = 5,306,096,811.10
5. Step 5: Solve for x
   x = 5,306,096,811.10/82,487.07
6. Step 6: Final answer
   x = 64,326.41