Finding the Fourth Proportional to 31,056,728.91, 42,858,456.17 and 18,011,722.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056,728.91 : 42,858,456.17 = 18,011,722.25 : x
2. Step 2: Convert to fraction form
   31,056,728.91/42,858,456.17 = 18,011,722.25/x
3. Step 3: Cross multiply
   31,056,728.91x = 42,858,456.17 × 18,011,722.25
4. Step 4: Simplify right side
   31,056,728.91x = 771,954,608,293,487.88
5. Step 5: Solve for x
   x = 771,954,608,293,487.88/31,056,728.91
6. Step 6: Final answer
   x = 24,856,275.45