Finding the Fourth Proportional to 89,408.50, 133,908.63 and 42,694.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,408.50 : 133,908.63 = 42,694.18 : x
2. Step 2: Convert to fraction form
   89,408.50/133,908.63 = 42,694.18/x
3. Step 3: Cross multiply
   89,408.50x = 133,908.63 × 42,694.18
4. Step 4: Simplify right side
   89,408.50x = 5,717,119,152.77
5. Step 5: Solve for x
   x = 5,717,119,152.77/89,408.50
6. Step 6: Final answer
   x = 63,943.80