Finding the Fourth Proportional to 72,022.28, 99,363 and 45,117.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,022.28 : 99,363 = 45,117.92 : x
2. Step 2: Convert to fraction form
   72,022.28/99,363 = 45,117.92/x
3. Step 3: Cross multiply
   72,022.28x = 99,363 × 45,117.92
4. Step 4: Simplify right side
   72,022.28x = 4,483,051,884.96
5. Step 5: Solve for x
   x = 4,483,051,884.96/72,022.28
6. Step 6: Final answer
   x = 62,245.35