Finding the Fourth Proportional to 42,116.36, 63,172.58 and 10,526.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,116.36 : 63,172.58 = 10,526.63 : x
2. Step 2: Convert to fraction form
   42,116.36/63,172.58 = 10,526.63/x
3. Step 3: Cross multiply
   42,116.36x = 63,172.58 × 10,526.63
4. Step 4: Simplify right side
   42,116.36x = 664,994,007.31
5. Step 5: Solve for x
   x = 664,994,007.31/42,116.36
6. Step 6: Final answer
   x = 15,789.45