Finding the Fourth Proportional to 89,495.76, 134,235.96 and 42,099.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,495.76 : 134,235.96 = 42,099.72 : x
2. Step 2: Convert to fraction form
   89,495.76/134,235.96 = 42,099.72/x
3. Step 3: Cross multiply
   89,495.76x = 134,235.96 × 42,099.72
4. Step 4: Simplify right side
   89,495.76x = 5,651,296,329.93
5. Step 5: Solve for x
   x = 5,651,296,329.93/89,495.76
6. Step 6: Final answer
   x = 63,145.97