Finding the Fourth Proportional to 89,388.60, 134,112.03 and 42,635.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,388.60 : 134,112.03 = 42,635.40 : x
2. Step 2: Convert to fraction form
   89,388.60/134,112.03 = 42,635.40/x
3. Step 3: Cross multiply
   89,388.60x = 134,112.03 × 42,635.40
4. Step 4: Simplify right side
   89,388.60x = 5,717,920,043.86
5. Step 5: Solve for x
   x = 5,717,920,043.86/89,388.60
6. Step 6: Final answer
   x = 63,966.99