Finding the Fourth Proportional to 89,481.76, 134,214.96 and 42,085.71

Step by Step Solution

1. Step 1: Write the proportion equation
   89,481.76 : 134,214.96 = 42,085.71 : x
2. Step 2: Convert to fraction form
   89,481.76/134,214.96 = 42,085.71/x
3. Step 3: Cross multiply
   89,481.76x = 134,214.96 × 42,085.71
4. Step 4: Simplify right side
   89,481.76x = 5,648,531,884.22
5. Step 5: Solve for x
   x = 5,648,531,884.22/89,481.76
6. Step 6: Final answer
   x = 63,124.95