Finding the Fourth Proportional to 72,005.64, 99,363.06 and 45,147

Step by Step Solution

1. Step 1: Write the proportion equation
   72,005.64 : 99,363.06 = 45,147 : x
2. Step 2: Convert to fraction form
   72,005.64/99,363.06 = 45,147/x
3. Step 3: Cross multiply
   72,005.64x = 99,363.06 × 45,147
4. Step 4: Simplify right side
   72,005.64x = 4,485,944,069.82
5. Step 5: Solve for x
   x = 4,485,944,069.82/72,005.64
6. Step 6: Final answer
   x = 62,299.90