Finding the Fourth Proportional to 82,261.30, 123,363.15 and 42,805.30

Step by Step Solution

1. Step 1: Write the proportion equation
   82,261.30 : 123,363.15 = 42,805.30 : x
2. Step 2: Convert to fraction form
   82,261.30/123,363.15 = 42,805.30/x
3. Step 3: Cross multiply
   82,261.30x = 123,363.15 × 42,805.30
4. Step 4: Simplify right side
   82,261.30x = 5,280,596,644.70
5. Step 5: Solve for x
   x = 5,280,596,644.70/82,261.30
6. Step 6: Final answer
   x = 64,192.96