Finding the Fourth Proportional to 123,411.77, 170,308.37 and 66,823.01

Step by Step Solution

1. Step 1: Write the proportion equation
   123,411.77 : 170,308.37 = 66,823.01 : x
2. Step 2: Convert to fraction form
   123,411.77/170,308.37 = 66,823.01/x
3. Step 3: Cross multiply
   123,411.77x = 170,308.37 × 66,823.01
4. Step 4: Simplify right side
   123,411.77x = 11,380,517,911.59
5. Step 5: Solve for x
   x = 11,380,517,911.59/123,411.77
6. Step 6: Final answer
   x = 92,215.82