Finding the Fourth Proportional to 20,983,531, 31,440,499.59 and 12,761,303.23

Step by Step Solution

1. Step 1: Write the proportion equation
   20,983,531 : 31,440,499.59 = 12,761,303.23 : x
2. Step 2: Convert to fraction form
   20,983,531/31,440,499.59 = 12,761,303.23/x
3. Step 3: Cross multiply
   20,983,531x = 31,440,499.59 × 12,761,303.23
4. Step 4: Simplify right side
   20,983,531x = 401,221,748,970,680.69
5. Step 5: Solve for x
   x = 401,221,748,970,680.69/20,983,531
6. Step 6: Final answer
   x = 19,120,792.82