Finding the Fourth Proportional to 82,290,742.73, 123,435,868.03 and 20,879,782.73

Step by Step Solution

1. Step 1: Write the proportion equation
   82,290,742.73 : 123,435,868.03 = 20,879,782.73 : x
2. Step 2: Convert to fraction form
   82,290,742.73/123,435,868.03 = 20,879,782.73/x
3. Step 3: Cross multiply
   82,290,742.73x = 123,435,868.03 × 20,879,782.73
4. Step 4: Simplify right side
   82,290,742.73x = 2,577,314,105,348,859
5. Step 5: Solve for x
   x = 2,577,314,105,348,859/82,290,742.73
6. Step 6: Final answer
   x = 31,319,611.66