Finding the Fourth Proportional to 92,852.55, 139,179.42 and 42,874.47

Step by Step Solution

1. Step 1: Write the proportion equation
   92,852.55 : 139,179.42 = 42,874.47 : x
2. Step 2: Convert to fraction form
   92,852.55/139,179.42 = 42,874.47/x
3. Step 3: Cross multiply
   92,852.55x = 139,179.42 × 42,874.47
4. Step 4: Simplify right side
   92,852.55x = 5,967,243,867.41
5. Step 5: Solve for x
   x = 5,967,243,867.41/92,852.55
6. Step 6: Final answer
   x = 64,265.80