Finding the Fourth Proportional to 82,880.58, 124,321.73 and 45,420.24

Step by Step Solution

1. Step 1: Write the proportion equation
   82,880.58 : 124,321.73 = 45,420.24 : x
2. Step 2: Convert to fraction form
   82,880.58/124,321.73 = 45,420.24/x
3. Step 3: Cross multiply
   82,880.58x = 124,321.73 × 45,420.24
4. Step 4: Simplify right side
   82,880.58x = 5,646,722,813.82
5. Step 5: Solve for x
   x = 5,646,722,813.82/82,880.58
6. Step 6: Final answer
   x = 68,130.83