Finding the Fourth Proportional to 159,938, 220,733.88 and 92,870

Step by Step Solution

1. Step 1: Write the proportion equation
   159,938 : 220,733.88 = 92,870 : x
2. Step 2: Convert to fraction form
   159,938/220,733.88 = 92,870/x
3. Step 3: Cross multiply
   159,938x = 220,733.88 × 92,870
4. Step 4: Simplify right side
   159,938x = 20,499,555,435.60
5. Step 5: Solve for x
   x = 20,499,555,435.60/159,938
6. Step 6: Final answer
   x = 128,171.89