Finding the Fourth Proportional to 89,072.73, 133,623.81 and 42,309.81

Step by Step Solution

1. Step 1: Write the proportion equation
   89,072.73 : 133,623.81 = 42,309.81 : x
2. Step 2: Convert to fraction form
   89,072.73/133,623.81 = 42,309.81/x
3. Step 3: Cross multiply
   89,072.73x = 133,623.81 × 42,309.81
4. Step 4: Simplify right side
   89,072.73x = 5,653,598,012.58
5. Step 5: Solve for x
   x = 5,653,598,012.58/89,072.73
6. Step 6: Final answer
   x = 63,471.70