Finding the Fourth Proportional to 31,451,704.72, 43,416,744.60 and 21,144,406

Step by Step Solution

1. Step 1: Write the proportion equation
   31,451,704.72 : 43,416,744.60 = 21,144,406 : x
2. Step 2: Convert to fraction form
   31,451,704.72/43,416,744.60 = 21,144,406/x
3. Step 3: Cross multiply
   31,451,704.72x = 43,416,744.60 × 21,144,406
4. Step 4: Simplify right side
   31,451,704.72x = 918,021,275,020,707.62
5. Step 5: Solve for x
   x = 918,021,275,020,707.62/31,451,704.72
6. Step 6: Final answer
   x = 29,188,283.53