Finding the Fourth Proportional to 42,328.07, 63,491.47 and 10,307.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,328.07 : 63,491.47 = 10,307.45 : x
2. Step 2: Convert to fraction form
   42,328.07/63,491.47 = 10,307.45/x
3. Step 3: Cross multiply
   42,328.07x = 63,491.47 × 10,307.45
4. Step 4: Simplify right side
   42,328.07x = 654,435,152.45
5. Step 5: Solve for x
   x = 654,435,152.45/42,328.07
6. Step 6: Final answer
   x = 15,461.02