Finding the Fourth Proportional to 92,742.94, 139,098.25 and 42,818.77

Step by Step Solution

1. Step 1: Write the proportion equation
   92,742.94 : 139,098.25 = 42,818.77 : x
2. Step 2: Convert to fraction form
   92,742.94/139,098.25 = 42,818.77/x
3. Step 3: Cross multiply
   92,742.94x = 139,098.25 × 42,818.77
4. Step 4: Simplify right side
   92,742.94x = 5,956,015,974.15
5. Step 5: Solve for x
   x = 5,956,015,974.15/92,742.94
6. Step 6: Final answer
   x = 64,220.69