Finding the Fourth Proportional to 89,375.71, 133,859.37 and 42,661.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,375.71 : 133,859.37 = 42,661.39 : x
2. Step 2: Convert to fraction form
   89,375.71/133,859.37 = 42,661.39/x
3. Step 3: Cross multiply
   89,375.71x = 133,859.37 × 42,661.39
4. Step 4: Simplify right side
   89,375.71x = 5,710,626,788.72
5. Step 5: Solve for x
   x = 5,710,626,788.72/89,375.71
6. Step 6: Final answer
   x = 63,894.62