Finding the Fourth Proportional to 102,401.73, 141,297.27 and 57,069.78

Step by Step Solution

1. Step 1: Write the proportion equation
   102,401.73 : 141,297.27 = 57,069.78 : x
2. Step 2: Convert to fraction form
   102,401.73/141,297.27 = 57,069.78/x
3. Step 3: Cross multiply
   102,401.73x = 141,297.27 × 57,069.78
4. Step 4: Simplify right side
   102,401.73x = 8,063,804,113.50
5. Step 5: Solve for x
   x = 8,063,804,113.50/102,401.73
6. Step 6: Final answer
   x = 78,746.76