Finding the Fourth Proportional to 61,578.03, 92,443.59 and 42,976.38

Step by Step Solution

1. Step 1: Write the proportion equation
   61,578.03 : 92,443.59 = 42,976.38 : x
2. Step 2: Convert to fraction form
   61,578.03/92,443.59 = 42,976.38/x
3. Step 3: Cross multiply
   61,578.03x = 92,443.59 × 42,976.38
4. Step 4: Simplify right side
   61,578.03x = 3,972,890,852.40
5. Step 5: Solve for x
   x = 3,972,890,852.40/61,578.03
6. Step 6: Final answer
   x = 64,517.99