Finding the Fourth Proportional to 43,217,805.31, 64,826,818.69 and 17,658,814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,217,805.31 : 64,826,818.69 = 17,658,814.72 : x
2. Step 2: Convert to fraction form
   43,217,805.31/64,826,818.69 = 17,658,814.72/x
3. Step 3: Cross multiply
   43,217,805.31x = 64,826,818.69 × 17,658,814.72
4. Step 4: Simplify right side
   43,217,805.31x = 1,144,764,780,133,743
5. Step 5: Solve for x
   x = 1,144,764,780,133,743/43,217,805.31
6. Step 6: Final answer
   x = 26,488,267.32