Finding the Fourth Proportional to 82,318.28, 123,476.52 and 19,988.84

Step by Step Solution

1. Step 1: Write the proportion equation
   82,318.28 : 123,476.52 = 19,988.84 : x
2. Step 2: Convert to fraction form
   82,318.28/123,476.52 = 19,988.84/x
3. Step 3: Cross multiply
   82,318.28x = 123,476.52 × 19,988.84
4. Step 4: Simplify right side
   82,318.28x = 2,468,152,402.04
5. Step 5: Solve for x
   x = 2,468,152,402.04/82,318.28
6. Step 6: Final answer
   x = 29,983.04