Finding the Fourth Proportional to 82,607.31, 123,878.43 and 29,278.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,607.31 : 123,878.43 = 29,278.80 : x
2. Step 2: Convert to fraction form
   82,607.31/123,878.43 = 29,278.80/x
3. Step 3: Cross multiply
   82,607.31x = 123,878.43 × 29,278.80
4. Step 4: Simplify right side
   82,607.31x = 3,627,011,776.28
5. Step 5: Solve for x
   x = 3,627,011,776.28/82,607.31
6. Step 6: Final answer
   x = 43,906.67