Finding the Fourth Proportional to 43,608.72, 65,314.68 and 42,624.60

Step by Step Solution

1. Step 1: Write the proportion equation
   43,608.72 : 65,314.68 = 42,624.60 : x
2. Step 2: Convert to fraction form
   43,608.72/65,314.68 = 42,624.60/x
3. Step 3: Cross multiply
   43,608.72x = 65,314.68 × 42,624.60
4. Step 4: Simplify right side
   43,608.72x = 2,784,012,109.13
5. Step 5: Solve for x
   x = 2,784,012,109.13/43,608.72
6. Step 6: Final answer
   x = 63,840.72