Finding the Fourth Proportional to 82,817.72, 123,993.30 and 74,419.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,817.72 : 123,993.30 = 74,419.64 : x
2. Step 2: Convert to fraction form
   82,817.72/123,993.30 = 74,419.64/x
3. Step 3: Cross multiply
   82,817.72x = 123,993.30 × 74,419.64
4. Step 4: Simplify right side
   82,817.72x = 9,227,536,748.41
5. Step 5: Solve for x
   x = 9,227,536,748.41/82,817.72
6. Step 6: Final answer
   x = 111,419.84