Finding the Fourth Proportional to 92,664, 139,019.22 and 42,778.98

Step by Step Solution

1. Step 1: Write the proportion equation
   92,664 : 139,019.22 = 42,778.98 : x
2. Step 2: Convert to fraction form
   92,664/139,019.22 = 42,778.98/x
3. Step 3: Cross multiply
   92,664x = 139,019.22 × 42,778.98
4. Step 4: Simplify right side
   92,664x = 5,947,100,432.00
5. Step 5: Solve for x
   x = 5,947,100,432.00/92,664
6. Step 6: Final answer
   x = 64,179.19