Finding the Fourth Proportional to 89,910.14, 134,822.13 and 42,485.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,910.14 : 134,822.13 = 42,485.76 : x
2. Step 2: Convert to fraction form
   89,910.14/134,822.13 = 42,485.76/x
3. Step 3: Cross multiply
   89,910.14x = 134,822.13 × 42,485.76
4. Step 4: Simplify right side
   89,910.14x = 5,728,020,657.87
5. Step 5: Solve for x
   x = 5,728,020,657.87/89,910.14
6. Step 6: Final answer
   x = 63,708.29