Finding the Fourth Proportional to 43,807.30, 65,727.15 and 42,187.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,807.30 : 65,727.15 = 42,187.30 : x
2. Step 2: Convert to fraction form
   43,807.30/65,727.15 = 42,187.30/x
3. Step 3: Cross multiply
   43,807.30x = 65,727.15 × 42,187.30
4. Step 4: Simplify right side
   43,807.30x = 2,772,850,995.20
5. Step 5: Solve for x
   x = 2,772,850,995.20/43,807.30
6. Step 6: Final answer
   x = 63,296.55