Finding the Fourth Proportional to 46,847.52, 64,676.30 and 30,978

Step by Step Solution

1. Step 1: Write the proportion equation
   46,847.52 : 64,676.30 = 30,978 : x
2. Step 2: Convert to fraction form
   46,847.52/64,676.30 = 30,978/x
3. Step 3: Cross multiply
   46,847.52x = 64,676.30 × 30,978
4. Step 4: Simplify right side
   46,847.52x = 2,003,542,421.40
5. Step 5: Solve for x
   x = 2,003,542,421.40/46,847.52
6. Step 6: Final answer
   x = 42,767.31