Finding the Fourth Proportional to 42,428.30, 63,332.27 and 39,344.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,428.30 : 63,332.27 = 39,344.54 : x
2. Step 2: Convert to fraction form
   42,428.30/63,332.27 = 39,344.54/x
3. Step 3: Cross multiply
   42,428.30x = 63,332.27 × 39,344.54
4. Step 4: Simplify right side
   42,428.30x = 2,491,779,030.31
5. Step 5: Solve for x
   x = 2,491,779,030.31/42,428.30
6. Step 6: Final answer
   x = 58,729.17