Finding the Fourth Proportional to 31,068.62, 42,877.62 and 19,138.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068.62 : 42,877.62 = 19,138.94 : x
2. Step 2: Convert to fraction form
   31,068.62/42,877.62 = 19,138.94/x
3. Step 3: Cross multiply
   31,068.62x = 42,877.62 × 19,138.94
4. Step 4: Simplify right side
   31,068.62x = 820,632,196.52
5. Step 5: Solve for x
   x = 820,632,196.52/31,068.62
6. Step 6: Final answer
   x = 26,413.54