Finding the Fourth Proportional to 72,403.12, 99,908.24 and 42,182.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,403.12 : 99,908.24 = 42,182.12 : x
2. Step 2: Convert to fraction form
   72,403.12/99,908.24 = 42,182.12/x
3. Step 3: Cross multiply
   72,403.12x = 99,908.24 × 42,182.12
4. Step 4: Simplify right side
   72,403.12x = 4,214,341,368.67
5. Step 5: Solve for x
   x = 4,214,341,368.67/72,403.12
6. Step 6: Final answer
   x = 58,206.63