Finding the Fourth Proportional to 92,696.76, 139,086.48 and 42,750

Step by Step Solution

1. Step 1: Write the proportion equation
   92,696.76 : 139,086.48 = 42,750 : x
2. Step 2: Convert to fraction form
   92,696.76/139,086.48 = 42,750/x
3. Step 3: Cross multiply
   92,696.76x = 139,086.48 × 42,750
4. Step 4: Simplify right side
   92,696.76x = 5,945,947,020
5. Step 5: Solve for x
   x = 5,945,947,020/92,696.76
6. Step 6: Final answer
   x = 64,144.07