Finding the Fourth Proportional to 83,628.57, 115,405.50 and 45,388.19

Step by Step Solution

1. Step 1: Write the proportion equation
   83,628.57 : 115,405.50 = 45,388.19 : x
2. Step 2: Convert to fraction form
   83,628.57/115,405.50 = 45,388.19/x
3. Step 3: Cross multiply
   83,628.57x = 115,405.50 × 45,388.19
4. Step 4: Simplify right side
   83,628.57x = 5,238,046,184.02
5. Step 5: Solve for x
   x = 5,238,046,184.02/83,628.57
6. Step 6: Final answer
   x = 62,634.65