Finding the Fourth Proportional to 72,740.53, 100,366.89 and 42,520.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,740.53 : 100,366.89 = 42,520.01 : x
2. Step 2: Convert to fraction form
   72,740.53/100,366.89 = 42,520.01/x
3. Step 3: Cross multiply
   72,740.53x = 100,366.89 × 42,520.01
4. Step 4: Simplify right side
   72,740.53x = 4,267,600,452.03
5. Step 5: Solve for x
   x = 4,267,600,452.03/72,740.53
6. Step 6: Final answer
   x = 58,668.81