Finding the Fourth Proportional to 72,040, 99,426.72 and 42,232

Step by Step Solution

1. Step 1: Write the proportion equation
   72,040 : 99,426.72 = 42,232 : x
2. Step 2: Convert to fraction form
   72,040/99,426.72 = 42,232/x
3. Step 3: Cross multiply
   72,040x = 99,426.72 × 42,232
4. Step 4: Simplify right side
   72,040x = 4,198,989,239.04
5. Step 5: Solve for x
   x = 4,198,989,239.04/72,040
6. Step 6: Final answer
   x = 58,286.91