Finding the Fourth Proportional to 89,382.68, 133,869.82 and 42,668.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,382.68 : 133,869.82 = 42,668.36 : x
2. Step 2: Convert to fraction form
   89,382.68/133,869.82 = 42,668.36/x
3. Step 3: Cross multiply
   89,382.68x = 133,869.82 × 42,668.36
4. Step 4: Simplify right side
   89,382.68x = 5,712,005,672.90
5. Step 5: Solve for x
   x = 5,712,005,672.90/89,382.68
6. Step 6: Final answer
   x = 63,905.06