Finding the Fourth Proportional to 82,017.28, 122,915.21 and 42,602.08

Step by Step Solution

1. Step 1: Write the proportion equation
   82,017.28 : 122,915.21 = 42,602.08 : x
2. Step 2: Convert to fraction form
   82,017.28/122,915.21 = 42,602.08/x
3. Step 3: Cross multiply
   82,017.28x = 122,915.21 × 42,602.08
4. Step 4: Simplify right side
   82,017.28x = 5,236,443,153.83
5. Step 5: Solve for x
   x = 5,236,443,153.83/82,017.28
6. Step 6: Final answer
   x = 63,845.61