Finding the Fourth Proportional to 123,918.72, 185,725.80 and 57,268.68

Step by Step Solution

1. Step 1: Write the proportion equation
   123,918.72 : 185,725.80 = 57,268.68 : x
2. Step 2: Convert to fraction form
   123,918.72/185,725.80 = 57,268.68/x
3. Step 3: Cross multiply
   123,918.72x = 185,725.80 × 57,268.68
4. Step 4: Simplify right side
   123,918.72x = 10,636,271,407.94
5. Step 5: Solve for x
   x = 10,636,271,407.94/123,918.72
6. Step 6: Final answer
   x = 85,832.64