Finding the Fourth Proportional to 72,438.50, 99,965.50 and 42,244.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,438.50 : 99,965.50 = 42,244.76 : x
2. Step 2: Convert to fraction form
   72,438.50/99,965.50 = 42,244.76/x
3. Step 3: Cross multiply
   72,438.50x = 99,965.50 × 42,244.76
4. Step 4: Simplify right side
   72,438.50x = 4,223,018,555.78
5. Step 5: Solve for x
   x = 4,223,018,555.78/72,438.50
6. Step 6: Final answer
   x = 58,297.98