Finding the Fourth Proportional to 89,421, 133,927.38 and 42,706.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,421 : 133,927.38 = 42,706.68 : x
2. Step 2: Convert to fraction form
   89,421/133,927.38 = 42,706.68/x
3. Step 3: Cross multiply
   89,421x = 133,927.38 × 42,706.68
4. Step 4: Simplify right side
   89,421x = 5,719,593,760.90
5. Step 5: Solve for x
   x = 5,719,593,760.90/89,421
6. Step 6: Final answer
   x = 63,962.53