Finding the Fourth Proportional to 42,776.76, 64,167.06 and 15,075

Step by Step Solution

1. Step 1: Write the proportion equation
   42,776.76 : 64,167.06 = 15,075 : x
2. Step 2: Convert to fraction form
   42,776.76/64,167.06 = 15,075/x
3. Step 3: Cross multiply
   42,776.76x = 64,167.06 × 15,075
4. Step 4: Simplify right side
   42,776.76x = 967,318,429.50
5. Step 5: Solve for x
   x = 967,318,429.50/42,776.76
6. Step 6: Final answer
   x = 22,613.18