Finding the Fourth Proportional to 82,173,721.20, 123,251,250.60 and 21,595,570.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,173,721.20 : 123,251,250.60 = 21,595,570.80 : x
2. Step 2: Convert to fraction form
   82,173,721.20/123,251,250.60 = 21,595,570.80/x
3. Step 3: Cross multiply
   82,173,721.20x = 123,251,250.60 × 21,595,570.80
4. Step 4: Simplify right side
   82,173,721.20x = 2,661,681,108,520,842.50
5. Step 5: Solve for x
   x = 2,661,681,108,520,842.50/82,173,721.20
6. Step 6: Final answer
   x = 32,390,903.92