Finding the Fourth Proportional to 20,912,131.86, 31,322,772.72 and 10,106,771.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,912,131.86 : 31,322,772.72 = 10,106,771.69 : x
2. Step 2: Convert to fraction form
   20,912,131.86/31,322,772.72 = 10,106,771.69/x
3. Step 3: Cross multiply
   20,912,131.86x = 31,322,772.72 × 10,106,771.69
4. Step 4: Simplify right side
   20,912,131.86x = 316,572,112,422,186.44
5. Step 5: Solve for x
   x = 316,572,112,422,186.44/20,912,131.86
6. Step 6: Final answer
   x = 15,138,203.73