Finding the Fourth Proportional to 92,768.97, 139,039.41 and 42,779.67

Step by Step Solution

1. Step 1: Write the proportion equation
   92,768.97 : 139,039.41 = 42,779.67 : x
2. Step 2: Convert to fraction form
   92,768.97/139,039.41 = 42,779.67/x
3. Step 3: Cross multiply
   92,768.97x = 139,039.41 × 42,779.67
4. Step 4: Simplify right side
   92,768.97x = 5,948,060,076.79
5. Step 5: Solve for x
   x = 5,948,060,076.79/92,768.97
6. Step 6: Final answer
   x = 64,116.91