Finding the Fourth Proportional to 48,870.38, 73,311.34 and 15,578.78

Step by Step Solution

1. Step 1: Write the proportion equation
   48,870.38 : 73,311.34 = 15,578.78 : x
2. Step 2: Convert to fraction form
   48,870.38/73,311.34 = 15,578.78/x
3. Step 3: Cross multiply
   48,870.38x = 73,311.34 × 15,578.78
4. Step 4: Simplify right side
   48,870.38x = 1,142,100,870.81
5. Step 5: Solve for x
   x = 1,142,100,870.81/48,870.38
6. Step 6: Final answer
   x = 23,370.00