Finding the Fourth Proportional to 82,185.40, 123,175.86 and 42,719.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82,185.40 : 123,175.86 = 42,719.32 : x
2. Step 2: Convert to fraction form
   82,185.40/123,175.86 = 42,719.32/x
3. Step 3: Cross multiply
   82,185.40x = 123,175.86 × 42,719.32
4. Step 4: Simplify right side
   82,185.40x = 5,261,988,979.62
5. Step 5: Solve for x
   x = 5,261,988,979.62/82,185.40
6. Step 6: Final answer
   x = 64,025.84