Finding the Fourth Proportional to 42,435.23, 63,615.17 and 21,347.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,435.23 : 63,615.17 = 21,347.69 : x
2. Step 2: Convert to fraction form
   42,435.23/63,615.17 = 21,347.69/x
3. Step 3: Cross multiply
   42,435.23x = 63,615.17 × 21,347.69
4. Step 4: Simplify right side
   42,435.23x = 1,358,036,663.75
5. Step 5: Solve for x
   x = 1,358,036,663.75/42,435.23
6. Step 6: Final answer
   x = 32,002.58