Finding the Fourth Proportional to 92,830.30, 139,120.72 and 50,647.17

Step by Step Solution

1. Step 1: Write the proportion equation
   92,830.30 : 139,120.72 = 50,647.17 : x
2. Step 2: Convert to fraction form
   92,830.30/139,120.72 = 50,647.17/x
3. Step 3: Cross multiply
   92,830.30x = 139,120.72 × 50,647.17
4. Step 4: Simplify right side
   92,830.30x = 7,046,070,629.74
5. Step 5: Solve for x
   x = 7,046,070,629.74/92,830.30
6. Step 6: Final answer
   x = 75,902.70