Finding the Fourth Proportional to 72,989.48, 100,727.98 and 42,360.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,989.48 : 100,727.98 = 42,360.22 : x
2. Step 2: Convert to fraction form
   72,989.48/100,727.98 = 42,360.22/x
3. Step 3: Cross multiply
   72,989.48x = 100,727.98 × 42,360.22
4. Step 4: Simplify right side
   72,989.48x = 4,266,859,392.96
5. Step 5: Solve for x
   x = 4,266,859,392.96/72,989.48
6. Step 6: Final answer
   x = 58,458.55