Finding the Fourth Proportional to 72,327.48, 99,821.40 and 42,113.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,327.48 : 99,821.40 = 42,113.32 : x
2. Step 2: Convert to fraction form
   72,327.48/99,821.40 = 42,113.32/x
3. Step 3: Cross multiply
   72,327.48x = 99,821.40 × 42,113.32
4. Step 4: Simplify right side
   72,327.48x = 4,203,810,561.05
5. Step 5: Solve for x
   x = 4,203,810,561.05/72,327.48
6. Step 6: Final answer
   x = 58,121.90