Finding the Fourth Proportional to 31,456,794.06, 43,401,603.42 and 20,288,561.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,456,794.06 : 43,401,603.42 = 20,288,561.40 : x
2. Step 2: Convert to fraction form
   31,456,794.06/43,401,603.42 = 20,288,561.40/x
3. Step 3: Cross multiply
   31,456,794.06x = 43,401,603.42 × 20,288,561.40
4. Step 4: Simplify right side
   31,456,794.06x = 880,556,095,845,120
5. Step 5: Solve for x
   x = 880,556,095,845,120/31,456,794.06
6. Step 6: Final answer
   x = 27,992,556.84