Finding the Fourth Proportional to 82,572,256.97, 123,855,580.27 and 21,162,018.68

Step by Step Solution

1. Step 1: Write the proportion equation
   82,572,256.97 : 123,855,580.27 = 21,162,018.68 : x
2. Step 2: Convert to fraction form
   82,572,256.97/123,855,580.27 = 21,162,018.68/x
3. Step 3: Cross multiply
   82,572,256.97x = 123,855,580.27 × 21,162,018.68
4. Step 4: Simplify right side
   82,572,256.97x = 2,621,034,103,167,612.50
5. Step 5: Solve for x
   x = 2,621,034,103,167,612.50/82,572,256.97
6. Step 6: Final answer
   x = 31,742,309.09