Finding the Fourth Proportional to 102,002, 140,775.96 and 57,290

Step by Step Solution

1. Step 1: Write the proportion equation
   102,002 : 140,775.96 = 57,290 : x
2. Step 2: Convert to fraction form
   102,002/140,775.96 = 57,290/x
3. Step 3: Cross multiply
   102,002x = 140,775.96 × 57,290
4. Step 4: Simplify right side
   102,002x = 8,065,054,748.40
5. Step 5: Solve for x
   x = 8,065,054,748.40/102,002
6. Step 6: Final answer
   x = 79,067.61