Finding the Fourth Proportional to 42,647.61, 63,969.58 and 14,570.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,647.61 : 63,969.58 = 14,570.17 : x
2. Step 2: Convert to fraction form
   42,647.61/63,969.58 = 14,570.17/x
3. Step 3: Cross multiply
   42,647.61x = 63,969.58 × 14,570.17
4. Step 4: Simplify right side
   42,647.61x = 932,047,582.58
5. Step 5: Solve for x
   x = 932,047,582.58/42,647.61
6. Step 6: Final answer
   x = 21,854.63