Finding the Fourth Proportional to 20,788,748.42, 31,175,356.34 and 7,138,019.30

Step by Step Solution

1. Step 1: Write the proportion equation
   20,788,748.42 : 31,175,356.34 = 7,138,019.30 : x
2. Step 2: Convert to fraction form
   20,788,748.42/31,175,356.34 = 7,138,019.30/x
3. Step 3: Cross multiply
   20,788,748.42x = 31,175,356.34 × 7,138,019.30
4. Step 4: Simplify right side
   20,788,748.42x = 222,530,295,101,265.62
5. Step 5: Solve for x
   x = 222,530,295,101,265.62/20,788,748.42
6. Step 6: Final answer
   x = 10,704,362.31