Finding the Fourth Proportional to 83,628.45, 115,406.78 and 45,388.76

Step by Step Solution

1. Step 1: Write the proportion equation
   83,628.45 : 115,406.78 = 45,388.76 : x
2. Step 2: Convert to fraction form
   83,628.45/115,406.78 = 45,388.76/x
3. Step 3: Cross multiply
   83,628.45x = 115,406.78 × 45,388.76
4. Step 4: Simplify right side
   83,628.45x = 5,238,169,835.82
5. Step 5: Solve for x
   x = 5,238,169,835.82/83,628.45
6. Step 6: Final answer
   x = 62,636.22