Finding the Fourth Proportional to 51,201,279.32, 76,801,992.89 and 20,909,142.32

Step by Step Solution

1. Step 1: Write the proportion equation
   51,201,279.32 : 76,801,992.89 = 20,909,142.32 : x
2. Step 2: Convert to fraction form
   51,201,279.32/76,801,992.89 = 20,909,142.32/x
3. Step 3: Cross multiply
   51,201,279.32x = 76,801,992.89 × 20,909,142.32
4. Step 4: Simplify right side
   51,201,279.32x = 1,605,863,799,308,082.75
5. Step 5: Solve for x
   x = 1,605,863,799,308,082.75/51,201,279.32
6. Step 6: Final answer
   x = 31,363,743.66