Finding the Fourth Proportional to 72,758.37, 100,405.06 and 42,561.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,758.37 : 100,405.06 = 42,561.57 : x
2. Step 2: Convert to fraction form
   72,758.37/100,405.06 = 42,561.57/x
3. Step 3: Cross multiply
   72,758.37x = 100,405.06 × 42,561.57
4. Step 4: Simplify right side
   72,758.37x = 4,273,396,989.54
5. Step 5: Solve for x
   x = 4,273,396,989.54/72,758.37
6. Step 6: Final answer
   x = 58,734.09