Finding the Fourth Proportional to 82,572,255.28, 123,855,577.74 and 21,162,016.99

Step by Step Solution

1. Step 1: Write the proportion equation
   82,572,255.28 : 123,855,577.74 = 21,162,016.99 : x
2. Step 2: Convert to fraction form
   82,572,255.28/123,855,577.74 = 21,162,016.99/x
3. Step 3: Cross multiply
   82,572,255.28x = 123,855,577.74 × 21,162,016.99
4. Step 4: Simplify right side
   82,572,255.28x = 2,621,033,839,987,581.50
5. Step 5: Solve for x
   x = 2,621,033,839,987,581.50/82,572,255.28
6. Step 6: Final answer
   x = 31,742,306.56