Finding the Fourth Proportional to 82,158.29, 123,236.15 and 42,154.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82,158.29 : 123,236.15 = 42,154.18 : x
2. Step 2: Convert to fraction form
   82,158.29/123,236.15 = 42,154.18/x
3. Step 3: Cross multiply
   82,158.29x = 123,236.15 × 42,154.18
4. Step 4: Simplify right side
   82,158.29x = 5,194,918,638.84
5. Step 5: Solve for x
   x = 5,194,918,638.84/82,158.29
6. Step 6: Final answer
   x = 63,230.61