Finding the Fourth Proportional to 42,317,630.28, 63,496,505.16 and 20,445,749.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,317,630.28 : 63,496,505.16 = 20,445,749.10 : x
2. Step 2: Convert to fraction form
   42,317,630.28/63,496,505.16 = 20,445,749.10/x
3. Step 3: Cross multiply
   42,317,630.28x = 63,496,505.16 × 20,445,749.10
4. Step 4: Simplify right side
   42,317,630.28x = 1,298,233,613,228,215.50
5. Step 5: Solve for x
   x = 1,298,233,613,228,215.50/42,317,630.28
6. Step 6: Final answer
   x = 30,678,315.51