Finding the Fourth Proportional to 82,988.67, 124,419.20 and 42,964.75

Step by Step Solution

1. Step 1: Write the proportion equation
   82,988.67 : 124,419.20 = 42,964.75 : x
2. Step 2: Convert to fraction form
   82,988.67/124,419.20 = 42,964.75/x
3. Step 3: Cross multiply
   82,988.67x = 124,419.20 × 42,964.75
4. Step 4: Simplify right side
   82,988.67x = 5,345,639,184.88
5. Step 5: Solve for x
   x = 5,345,639,184.88/82,988.67
6. Step 6: Final answer
   x = 64,414.09