Finding the Fourth Proportional to 102,725.68, 141,758.71 and 57,404.03

Step by Step Solution

1. Step 1: Write the proportion equation
   102,725.68 : 141,758.71 = 57,404.03 : x
2. Step 2: Convert to fraction form
   102,725.68/141,758.71 = 57,404.03/x
3. Step 3: Cross multiply
   102,725.68x = 141,758.71 × 57,404.03
4. Step 4: Simplify right side
   102,725.68x = 8,137,521,241.60
5. Step 5: Solve for x
   x = 8,137,521,241.60/102,725.68
6. Step 6: Final answer
   x = 79,216.04