Finding the Fourth Proportional to 72,490.55, 100,040.27 and 42,271.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,490.55 : 100,040.27 = 42,271.07 : x
2. Step 2: Convert to fraction form
   72,490.55/100,040.27 = 42,271.07/x
3. Step 3: Cross multiply
   72,490.55x = 100,040.27 × 42,271.07
4. Step 4: Simplify right side
   72,490.55x = 4,228,808,544.43
5. Step 5: Solve for x
   x = 4,228,808,544.43/72,490.55
6. Step 6: Final answer
   x = 58,336.00