Finding the Fourth Proportional to 42,347.10, 63,540.69 and 28,313.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,347.10 : 63,540.69 = 28,313.85 : x
2. Step 2: Convert to fraction form
   42,347.10/63,540.69 = 28,313.85/x
3. Step 3: Cross multiply
   42,347.10x = 63,540.69 × 28,313.85
4. Step 4: Simplify right side
   42,347.10x = 1,799,081,565.56
5. Step 5: Solve for x
   x = 1,799,081,565.56/42,347.10
6. Step 6: Final answer
   x = 42,484.17