Finding the Fourth Proportional to 82,479.84, 123,609.60 and 42,954.08

Step by Step Solution

1. Step 1: Write the proportion equation
   82,479.84 : 123,609.60 = 42,954.08 : x
2. Step 2: Convert to fraction form
   82,479.84/123,609.60 = 42,954.08/x
3. Step 3: Cross multiply
   82,479.84x = 123,609.60 × 42,954.08
4. Step 4: Simplify right side
   82,479.84x = 5,309,536,647.17
5. Step 5: Solve for x
   x = 5,309,536,647.17/82,479.84
6. Step 6: Final answer
   x = 64,373.75