Finding the Fourth Proportional to 92,698.18, 138,940.17 and 42,673.39

Step by Step Solution

1. Step 1: Write the proportion equation
   92,698.18 : 138,940.17 = 42,673.39 : x
2. Step 2: Convert to fraction form
   92,698.18/138,940.17 = 42,673.39/x
3. Step 3: Cross multiply
   92,698.18x = 138,940.17 × 42,673.39
4. Step 4: Simplify right side
   92,698.18x = 5,929,048,061.08
5. Step 5: Solve for x
   x = 5,929,048,061.08/92,698.18
6. Step 6: Final answer
   x = 63,960.78