Finding the Fourth Proportional to 92,697.76, 139,087.98 and 42,751

Step by Step Solution

1. Step 1: Write the proportion equation
   92,697.76 : 139,087.98 = 42,751 : x
2. Step 2: Convert to fraction form
   92,697.76/139,087.98 = 42,751/x
3. Step 3: Cross multiply
   92,697.76x = 139,087.98 × 42,751
4. Step 4: Simplify right side
   92,697.76x = 5,946,150,232.98
5. Step 5: Solve for x
   x = 5,946,150,232.98/92,697.76
6. Step 6: Final answer
   x = 64,145.57