Finding the Fourth Proportional to 31,143,676.43, 42,979,502.77 and 17,912,832.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,143,676.43 : 42,979,502.77 = 17,912,832.18 : x
2. Step 2: Convert to fraction form
   31,143,676.43/42,979,502.77 = 17,912,832.18/x
3. Step 3: Cross multiply
   31,143,676.43x = 42,979,502.77 × 17,912,832.18
4. Step 4: Simplify right side
   31,143,676.43x = 769,884,620,298,855.12
5. Step 5: Solve for x
   x = 769,884,620,298,855.12/31,143,676.43
6. Step 6: Final answer
   x = 24,720,415.46