Finding the Fourth Proportional to 82,928.04, 124,445.40 and 82,621.92

Step by Step Solution

1. Step 1: Write the proportion equation
   82,928.04 : 124,445.40 = 82,621.92 : x
2. Step 2: Convert to fraction form
   82,928.04/124,445.40 = 82,621.92/x
3. Step 3: Cross multiply
   82,928.04x = 124,445.40 × 82,621.92
4. Step 4: Simplify right side
   82,928.04x = 10,281,917,883.17
5. Step 5: Solve for x
   x = 10,281,917,883.17/82,928.04
6. Step 6: Final answer
   x = 123,986.02