Finding the Fourth Proportional to 92,928.72, 139,372.06 and 42,981.41

Step by Step Solution

1. Step 1: Write the proportion equation
   92,928.72 : 139,372.06 = 42,981.41 : x
2. Step 2: Convert to fraction form
   92,928.72/139,372.06 = 42,981.41/x
3. Step 3: Cross multiply
   92,928.72x = 139,372.06 × 42,981.41
4. Step 4: Simplify right side
   92,928.72x = 5,990,407,653.40
5. Step 5: Solve for x
   x = 5,990,407,653.40/92,928.72
6. Step 6: Final answer
   x = 64,462.39