Finding the Fourth Proportional to 89,395.62, 134,109.84 and 42,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,395.62 : 134,109.84 = 42,648.50 : x
2. Step 2: Convert to fraction form
   89,395.62/134,109.84 = 42,648.50/x
3. Step 3: Cross multiply
   89,395.62x = 134,109.84 × 42,648.50
4. Step 4: Simplify right side
   89,395.62x = 5,719,583,511.24
5. Step 5: Solve for x
   x = 5,719,583,511.24/89,395.62
6. Step 6: Final answer
   x = 63,980.58