Finding the Fourth Proportional to 82,268.80, 123,374.40 and 42,812.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,268.80 : 123,374.40 = 42,812.80 : x
2. Step 2: Convert to fraction form
   82,268.80/123,374.40 = 42,812.80/x
3. Step 3: Cross multiply
   82,268.80x = 123,374.40 × 42,812.80
4. Step 4: Simplify right side
   82,268.80x = 5,282,003,512.32
5. Step 5: Solve for x
   x = 5,282,003,512.32/82,268.80
6. Step 6: Final answer
   x = 64,204.21